Definition of toxins

Answers

Answer 1

Answer:

A poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable.

Explanation:


Related Questions

If one substance floats in another it must be dense


True
Or
False

Answers

Answer:

true

Explanation:

Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume.

The answer is false

ASAP
What is important about a scientific hypothesis?

A) A hypothesis should be falsifiable

B) it should support current scientific theories

C) it should be a question

Answers

Answer:

A

Explanation:

a hypothesis should be falisifiable

According to the Cell Theory, what is NOT one of the three main tenants?

1. viruses - which are not alive - not made of cells

2. The cell is the smallest living unit in all organisms

3. All living things are made of cells

4. All cells come from other pre-existing cells

Answers

1. Viruses, they are not related to Cell Theory

Which of the following is most likely course the liquid in tube A to rise

Answers

The first one I think I’m not sure

______is the international system of units used by scientists worldwide.

Answers

Hey :)

SI unit/ Standard International


The International System of Units (SI, abbreviated from the French Système international (d'unités)

Hope this helps :)

Which molecule is most common in the human body?
O A. H2
B. N2
C. H20
D. CO2

Answers

H20 is the most common molecule in the human body.

Florida can be described as a peninsula, surrounded on three sides by salt water: the Atlantic Ocean and the Gulf of Mexico. The low lying areas of Florida are particularly susceptible to salt water intrusions and flooding. What is one way that such a disaster would greatly impact human life? A) Available fresh water would be reduced. B) Recreational areas might be destroyed. C) Sink hole development would increase. D) Local weather would be altered.

Answers

Answer:

I think it's B.

Explanation:

It might also be A, but B would be my first answer. Hoped this helps!

What is the percent of slope on land where the elevation falls 3 feet in 75 feet of horizontal distance
A 4%
B 6%
C 4.5%
D 6.5%

Answers

Answer:

I pretty sure its C. 4.5%

Explanation:

When observing a specimen under medium power, which adjustment knob should be used to focus the image? Why?

Answers

Answer:

The coarse adjustment knob should only be used with the lowest power objective lens. Once it is in focus, you will only need to use the fine focus. Using the coarse focus with higher lenses may result in crashing the lens into the slide.

Explanation:

Are echinoderms autotrophic? How do you know? (site 1)

Answers

Answer:

They are heterotrophic!:)

Explanation:

Hey! Echinoderms aren't autrophic due to them veing observed to consume other organisms. Have a good day/night!

Make list of farm tool used in:

Land preparation
Cultivation
Plant propagation
Harvesting

Answers

Answer:

Land preparation:

This has to do with preparing the land in preparation for planting.

Farm tools used in land preparation include scrapers, ditchers, ploughs, levelers.

Cultivation:

This has to do with loosening the soil for farm use.

Farm tools used in Cultivation include: spade, shovel, rake, etc.

Plant propagation:

This is the act of growing new seeds, using different sources.

Examples of farm tools used in this operation include: propagation knife, hand pruner, sharpening stone, etc

Harvesting:

This is the process of collecting or gathering crops which were planted and have reached age of maturity.

Examples of farm tools used in this operation are hand sickle, darat, gandasa, etc.

The list of farm tools used for various uses include the following:

Land preparation-This involves preparing the land for planting. Examples of farm tools used include tractor, harrows, plough, levelers etc

Cultivation- This involves the process of preparing the soil for planting and crop cultivation. Examples of farm tools used in cultivation include spade, shovel, rake, etc.

Plant propagation- This involves different techniques which are used to grow crops using stems or leaves of plants. Examples of farm tools used include propagation knife, hand pruner, sharpening stone, etc

Harvesting- This involves the process of gathering planted crops which have reached maturity and ready for consumption and other uses. Examples of farm tools used include hand sickle, darat, gandasa, etc.

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What type of memory is used for
actions that become automatic?
A. Episodic
B. Semantic
C. Procedural

Answers

Answer:

B

Explanation:

Answer:

C. Procedural

Explanation:

The correct answer is C.

The atmosphere of both Mars and Venus is mostly _____
carbon dioxide
O carbon monoxide
O nitrogen
O oxygen

Answers

carbon monoxide is the correct answer
Carbon monoxide is the right answer

a)what are the difference between two species of minnows?​

Answers

Animals are often individually consistent in their behavior, not only over time, but also across different functional contexts. Recent research has focused on phenotypic and evolutionary mechanisms explaining such personality differences through selection. Parasitism and predation induce important mortality and fitness costs, and are thus main candidates to create and maintain personality differences in the wild. Here, we present data on the behavioral consistency of the Eurasian minnow (Phoxinus phoxinus) from two populations that live in different tributaries of the same river, but whose ecological environment differs fundamentally with regard to predation and parasitism. We experimentally demonstrate that individual minnow in both study populations are consistent in their boldness and activity. However, the two study populations differ notably: in the high predation and parasitism risk population fish show higher mean boldness, but tend to be less active than fish in low predation and parasitism risk population. Parasite (Diplostomum phoxini) load was negatively, but not statistically significantly, associated with fish activity level. Our study suggests that parasitism and predation are likely important agents in the ecology and evolution of animal personalities.


Question:
How long does it take the moon to
complete 1 rotation?

Answers

Answer:

27.3 days moon take to complete one rotation.

It can be more than one

Answers

Answer:

Only the matter stored in body tissues

Explanation:

Cuz the seal took some of the matter for itself :)

How do we know tectonic plates move slowly

Answers

Using GPS satellites. they repeatedly measure distance between two points

Explain in detail how changes in light intensity or carbon dioxide levels might change rates of photosynthesis.

Answers

Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.

The *blank* converts food into energy. It is found in both plant cells and animal cells.

what is the *blank*?

Answers

Answer:

Glucose?

Explanation:


Animal cells use mitochondria to convert food into energy, and plant cells use both chloroplasts and mitochondria to make energy from light, air, and water.

Answer: Mitochondria

100°C is the temperature at which _
A. water freezes
B. water boils
C. brine freezes
D. metal melts Submit​

Answers

Answer: B. Water boils

WILL MARK BRAILIEST. Can someone help me wit des seven questions? (The issue is Air Pollution.)

1.) What is the issue? (Briefly describe the issue.)

2.) How does your issue affect 3 or more specific characteristics of the Chesapeake Bay?

3.) What specific actions are people taking to solve this issue or improve the situation? (Include 3 or more actions.)

4.) Describe how those actions will most likely affect the Chesapeake Bay. (Be as specific as possible.)

5.) In what ways does the Chesapeake Bay provide habitat?

6.) In what ways does the Chesapeake Bay provide opportunities for recreation?

7.) In what ways does the Chesapeake Bay provide opportunities for jobs and businesses ?

Answers

1. Air pollution is the presence of substances- such as carbon monoxide, nitrogen oxide, lead and sulfur dioxide- in the atmosphere that are harmful to the health of living beings, or damaging to the climate or other materials. Some causes of air pollution are burning of Fossil Fuels, aricultural Activities and waste in landfills

2. Air pollution from from power plants, vehicle exhaust, and other man-made causes have caused great affects to Chesapeake bay. Firstly, nitrogen from the air enters the Bay via the rain, which contribute to algal blooms. These algal blooms absorb oxygen from the water and create dead zones that cannot sustain marine animal or plant life.

Secondly, pollution from the power plants in the area- consisting mainly of the toxic chemical mercury- pose risk to anglers in the area. These contaminants can bind to sediment and enter bodies of small, bottom-dwelling organisms like worms, clams or crustaceans. Through a process known as bioaccumulation, fish that consume contaminated organisms can accumulate these toxins in their own tissue. Anglers are warned to limit their consumption of certain fish from the Bay due to potentially harmful levels of the chemical.

Lastly, exposure to air pollution will affect those living in, and visiting, the Bay. Air pollution can also cause headaches, dizziness, and nausea, as well as long-term health effects including heart disease, lung cancer, and respiratory diseases such as emphysema. Air pollution can also cause long-term damage to people's nerves, brain, kidneys, liver, and other organs

3. The Chesapeake Bay is arguably the most studied large body of water on earth. Forty years of intense scientific investigation by leading estuarine scientists have identified why the Chesapeake is degraded and how to fix it. No other water body in the world can boast this level of scientific understanding.

The first action being taken to protect the bay from air pollution is by planting more plant life in the area. Through a process called attenuation, forests can reduce the amount of pollutants in the air. The plants roots and leaves and forest soils absorb and trap airborne pollutants. They can capture more than 85 percent of the nitrogen that falls onto them from the air, keeping it out of the bay.

Secondly people are changing the way they travel around and near the Bay. To lower air pollution people consider learning how to drive the Bay-friendly way; walk bike, take public transport and carpool when possible. They also try to use electric or manual lawn mowers and yard tools instead of gas-powered machines.

Thirdly, the Environmental protection agency developed the Chesapeake Bay Total Maximum Daily Load in 2010 (TMDL). It set limits on the amount of nitrogen, phosphorus, and sediment that can enter the Bay and its tidal rivers to meet water quality goals. Ever since, the EPA has kept track on the progress of the Chesapeake Bays health.

4.

In planting more trees and plants near the Chesapeake Bay area, it will prevent some sediment and pollutants entering the water. The plants roots and leaves and forest soils absorb and trap airborne pollutants. They can capture more than 85 percent of the nitrogen that falls onto them from the air, keeping it out of the bay through attenuation.

Secondly by reducing the amount of pollutants entering the air via petrol powered machines and cars, the amount of pollutants entering the waters will decrease. Each year, more than 85 million pounds of nitrogen pollution—about one-third of the Bay's total yearly load—comes from air pollution, and with 18 million people living in the Chesapeake Bay watershed, you can imagine how much difference cutting down on transport generated pollution would make.

Finally setting the TMDL will aid in preventing the amount of pollutants in the water reaching a high concentration and hopefully reduce the amount of algal blooms and dead zones within the bay.

5. The bay provides habitat for many organisms. Amongst forests, rivers and streams, shallow waters, beaches and tidal flats, aquatic reefs, wetlands and waters- the bay supports life such as crabs, fish, birds, worms, molluscs, corals, aquatic plants, trees and shrubbery and amphibians.

6. There are many opportunities for recreation in Chesapeake Bay. For example hiking, bike riding, hunting, bird watching, boating, fossil hunting, fishing and golfing.

7. The Chesapeake Bay provides job opportunities for scientists in terms of studying the waters and the ecosystems existing within it, those wishing to attract tourists through the marketing of outdoor activities, those who work in the nearby native American or maritime museums and those selling seafood such as fishermen

PLEASE HELP I HAVE TO FILL IN THE BLANKS!!!!!!
For every volcano, there is a ____________ in the nearby ocean, formed due to subduction.

Answers

There is a Island nearby

18. What structure of the tibia forms the medial portion of the ankle?

Answers

Answer: Medial Malleolus formed by the end of the tibia.

Explanation: Took human anatomy.

Hope this helps!

If star A is red and star B is blue which star is brighter

Answers

Answer:

Star A

Explanation:

Although blue stars are hotter, red stars go through nuclear fusion faster than blue stars, which makes them give off more light :)

2. What do mushrooms, trees, spiders, birds and humans all have
in common?

Answers

Answer:

They are all living organisms

Answer:

In basic biology, however, we can state two major facts that the both have in common when compared to other groups of living beings. The first one is our intracellular structure: fungi and humans present eukaryotic cells (such as plants and protozoa), which, unlike bacteria, have a membrane protecting its nuclei.

Explanation:

Which statement best summarizes the complete rock cycle?


1.Sedimentary rocks are weathered to form igneous rocks. Igneous rocks are melted and cooled to form metamorphic rocks.


2.Metamorphic rocks melt to form igneous rocks. Igneous rocks can be weathered to form sedimentary rocks.


3.Sedimentary rocks are the only rocks that are weathered. Igneous rocks can change to sedimentary rocks.metamorphic rocks by heat and pressure. All rocks can be melted and cooled to form igneous rocks.


4.All rocks can change into all other rocks. When rock is melted and cooled, it forms an igneous rock. When rock is under extreme heat and pressure, a metamorphic rock forms. When rock goes through stratification, a sedimentary rock is formed.

Answers

Answer:

3.Sedimentary rocks are the only rocks that are weathered. Igneous rocks can change to sedimentary rocks.metamorphic rocks by heat and pressure. All rocks can be melted and cooled to form igneous rocks.

Explanation:

Sedimentary rocks as the name implies are made up of rock sediments which are formed by weathering processes.

Igneous rocks are the rocks which gives rise to sedimentary rocks and metamorphic rocks under certain conditions such as heat and pressure.

All the type of rocks can also be melted and cooled to form back to igneous rocks.

If a rock falls and kills 10 individuals from a population of 100 plants of the same species and the frequency of alleles changes, does the population evolve instantly from that stochastic event? Can it be said that Natural Selection is at work in this case? And how does the Synthetic Theory of Evolution help answer this question?

Answers

Answer:

Explanation:

This question seeks to test the knowledge of the modern synthetic theory of evolution. This theory describes evolution as the changes occurring in the allele frequency within a population of the same specie. Hence, the following questions derived from the question can be answered as thus

1) Does the population evolve instantly from that stochastic event?

YES. This is because the frequency of the allele changed.

2) Can it be said that Natural Selection is at work in this case?

YES. The synthetic theory of evolution derives great "evidence" from natural selection because the allele frequency is believed to have changed because of the environmental impact (the rock) and that the next generation will adapt better to such an environment.

3) How does the Synthetic Theory of Evolution help answer this question?

Previously, evolution was believed to occur over several generation which ultimately lead to some phenotypic changes as a result of adaptive changes in the genes. This old description of evolution would have made one arrive at a wrong answer if one does not consider the modern synthetic theory of evolution which talks about instant evolution from allele frequency (as was described in the question).

Most areas near the equator receive ___ solar energy than the poles receive
-more
-less

Answers

The correct answer is more

Write the overall equation for photosynthesis using words?

Answers

Answer:

carbon dioxide + water =glucose +oxygen

Explanation:

hope this helps :)

The overall equation for photosynthesis using words is:

Carbon dioxide + water + sunlight energy → glucose + oxygen

Photosynthesis in plant chloroplasts and photosynthetic microorganisms is a complex metabolic process. Photosynthesis equation: [tex]CO_2 + H_2O + sunlight = glucose (C_6H_{12}O_6) + O_2.[/tex]

Photosynthesis converts carbon dioxide and water into glucose and oxygen. Special pigments like chlorophyll collect sunlight and transform it into chemical energy.

Photosynthesis underpins the food chain and sustains life on Earth. Primary producers, plants synthesise glucose that sustains all other organisms' growth and development. Photosynthesis provides oxygen for respiration and regulates carbon dioxide levels, preserving Earth's atmosphere.

Learn more about photosynthesis, here:

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How does a catalyst work?
A. by increasing the temperature of a chemical reaction
B. by decreasing the pressure of a chemical reaction
C. by increasing the concentration of reactants in a reaction
D. by decreasing the activation energy of a reaction

Answers

Answer:

D. By decreasing the activation energy of a reaction

Explanation:

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Question 18What economic problem do many Middle Eastern countries experience? To make a batch of salad dressing, combine 5 tablespoons of oil with 15 tablespoons of vinegar. How many tablespoons of vinegar are needed for every tablespoon of oil?On the double number line below, fill in the given values, then use multiplication or division to find the missing value: What is the y-intercept if the line?A. 0B. -2C. 1D. 1/2 Why do you think the Aztecs would not change their religious beliefs? How did Francis come to live in Dublin in Prince Francis? i need help with this 1.- A You ......... take scissors on the plane. Theyre not allowedB Ok. Ill pack them in the luggage. couldcantcouldnt2.- A How was your flight?B Well, my original flight got canceled. But I ___________ able to get on another one two hours later. waswont bewasnt3.-A. Is that my water bottle or ...........?B Its mine youyouryours4.- A. Is this her suitcase? B No, ........... is already checked. herhersmine5.- A Could I please have a bus schedule=B. Yes, of course you ............ Here you gocancouldcant6.- A We .......... board now. They just calle our section. B Great. Let me get my bagcancouldntcant7.- A David .... abot to take this juice on the plane. B Ok. Ill tell him to drink it nowwasntwont bewill be8.- A Did you forget your bag on the bus?B Its not ours. Its............theirtherestheirs9.- A would I have a transfer ticket? B Ok. Here you arewouldcouldwill10. A Excuse me. .............. you please sit down?B of course. Im sorrymaycantwould Three times two less than a number is greater than or equal to five times the number. Find all of the numbers that satisfy the given conditions.Let n = a number. Choose the inequality that represents the given relationship. Find the number of atoms of each element.Ca(OH2)3Ca:0:H:please!!! 3(k+7)>57 please help and solve Which statements about the Mississippian Indians are correct? Select all that apply.A. They mainly lived in pueblos.B. They were mound builders that used mounds for many purposes including religion and storage.C. They were horticulturalist that grew the "three sisters" for food.D. They were nomadic.E. Their villages were organized as chiefdoms. Macy always thought there were only a few hair colors: blond, brown, and black. However, when she actually began looking around, she saw varying shades of these hair colors. What is possible reason for so many different hair colors? PLEASE HELP WILL MARK BRAINLIESTT How did mass culture signify a change in American life?A: Americans became more alike in their purchasing.B: The new middle-class strove to create a completely independent identity.c: A class of trendsetters emerged from the middle class.D: Rich and poor people used the exact same goods. A carpenter has less than 120 minutes to spend painting furniture each day. Today, he has spent 30.5 minutes painting a desk. Now he will paint x chairs, each of which takes 12.5 minutes. What is the maximum number of chairs the carpenter can paint? simply the following 2m5m7m Describe the laws Christians lived by under Muslim Rule. What traditional belief expanded in Ancient Greece with the development of direct democracy?A. Religious faith is the basis for law.B. Individuals have political duties C. People have moral freedom.D. There is only one god. The prefix for one-millionth is micro-.TrueFalse If you go to a nutrition store and buy a supplement, you can count on the fact that it is pure and safe because supplements are regulated, controlled, and inspected by the FDA. What do you know about letters? What is the first thing you think of whenyou think of a letter? Is a letter personal or impersonal? Why wouldsomeone write a letter?