Answer:
Increased levels of phosphate are beneficial to phytoplankton and aquatic plants. In the short-run, this means increased micronutrients for herbivorous and omnivorous fish.
The phosphate, however, reacts with the water to reduce the oxygen levels obtainable in the water. Without oxygen, the fishes die off.
It is not unusual to find that with increased phosphate in water, healthy fishes begin to die off without any other plausible explanation.
The solution is to clean the water or treat it with solutions that impact positively whilst reducing the phosphate levels.
Cheers!
PLEASE HELP (will give brainliest):
A sample of food is dehydrated, which kills all of the bacteria. However, in a few days, bacteria-free water is added to the food in a bacteria-free environment. Nevertheless, microscopic investigations indicate that bacteria are in the food. How did the bacteria get there?
Answer:
Because the cells in the dehydrated fruit become re-hydrated with the water which then gives the cells in both the water and the fruit the tools that it needs to "come alive" if you will. And the cells become active in the fruit and use the water to grow bacteria.
Explanation:
What characteristics of the plant make it a living thing?
"Francesco Redi was a scientist that performed an experiment to determine whether maggots formed from rotting meat. Versions of his experiments are described below. Meat was placed in two beakers. One of the beakers was left open to the air. The other beaker was covered with a fabric that only allowed air to get in. As the meat rotted, flies landed on the meat in the open beaker but were unable to get to the meat with the fabric over it. After a few days, maggots appeared on the meat in the open beaker, but not in the closed beaker. In the next experiment, rotting meat was placed in two beakers. Dead flies were placed in one beaker, and live flies were placed in the other beaker. Both beakers were sealed, allowing no air in. Maggots appeared in the beaker with live flies, but not in the beaker with dead flies." 1. Explain how this experiment disproves the theory of spontaneous generation. (3 points)
Answer:
Francesco Redi performed an experiment explained in the question to confirm wheather maggots formed from roeeting meat. He explained that maggots on meat do not form spontaneously.
These maggots come from the eggs laid by flies on the meat as it is only found on open meat jar where flies can go and lay their eggs. It disaproves the spontaneous generation thoery as if it was true open jar or closed jar every rotting meat jar must carry maggots on them.
A scientist usually runs a(n) |
to see the effects
the independent variable has on the dependent variable.
Answer: Experiment.
Explanation:
Suppose that we have two related variables, A (independent) and B (dependent)
We could design an experiment where we can manipulate the value of A at will, and we also can observe how the variable B changes.
This is called an experiment, where the objective is to see how the variable B is related to the variable A, and then try to make a model that explains this relationship.
why there is uncertainty in science.
Answer: absolute certainty is often difficult to achieve. Scientific uncertainty generally means that there is a range of possible values within which the true value of the measurement lies.
Please brainliest
As a group, discuss the opening analogy of an efficiency apartment and a mansion as it relates to cells. Record your final consensus of how this analogy applies to cell structure.
Answer:
Their structures have to do more things (in an apartment the living room is also the dining room), This analogy applies to cells because simpler prokaryotic cells, which have less structures. It also applies to more complex eukaryotic cells that have more structures, where each structure only does a singular task. (In a mansion each room, only serves one purpose.) I believe it means that even though the homes/cells may appear different, they all include the same basic essentials.
Explanation:
An apartment could represent a prokaryotic cell while a mansion could represent a eukaryotic cell, since the latter is much larger and more complex.
Prokaryotic cells are unicellular organisms that lack membranous organelles and whose genetic material is dispersed in the cytoplasm in an area called the nucleoid. Examples of these type of cells are bacteria, microscopic organism. They are small cells, approximately 1-10 µm, and they have the following components:
Cell membrane Cell wall Cytoplasm Nucleoid Plasmids Ribosomes Periplasm Flagellum Capsule Pili or fimbriae GlycocalyxOn the other hand, eukaryotic cells present organelles with membranes and an organized cell nucleus containing DNA. They are larger than prokaryotic cells, 10-30 µm in size. Examples of eukaryotic cells are the ones that form complex organisms such as animals and plants. However, there are also some eukaryotic unicellular organisms, such as protozoa. They have the following components:
Cell membrane Cell wall (in plants) Cytoplasm Mitochondria Chloroplasts Ribosome Lysosome Golgi apparatus Smooth Endoplasmic Reticulum Rough Endoplasmic Reticulum Centriole Flagellum (not in all) Vacuole Microtubules VesiclesProkaryotes and eukaryotes vary in several important ways and these differences include structural variation, whether a nucleus is present or absent, and whether the cell has membrane-bound organelles, and molecular variation, including whether the DNA is in circular or linear form. Since prokaryotic cells are so much smaller and simpler, they would be like an apartment, while eukaryotic cells are like a mansion because they are much more bigger, have more structures and are more complex. In a smaller space everything is close at hand, while in a larger space more organization is needed to find things efficiently. Eukaryotic cells, as they form more complex organisms, need to produce more energy and have a larger number of organelles, with more important functions, so the cell needs a larger size to accommodate them.
Therefore, eukaryotic cells resembles a mansion and prokaryotic cells resembles an apartment. This is because of the larger size of the eukaryotes and its cellular machinery which is more complex since it has an endomembrane system which enables greater metabolic efficiency. This allows the separation of functions in the cytoplasm. And prokaryotes are much smaller and simpler, they do not need so much metabolic efficiency or a big size.
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A group of students hypothesizes that the amount of alcohol produced in fermentation depends on the amount of glucose supplied to the yeast. They want to use 5%, 10%, 15%, 20%, 25%, and 30% glucose solutions. 1)What is the independent variable? 2)What is the dependent variable? 3)What control treatment should be used? 4)What variables should be standardized (controlled)? 5)What type of graph is appropriate for presenting these data?
Answer:
1) Glucose solutions
2) Amount of alcohol
3) Water
4) Yeast
5) Bar chart
Explanation:
1) Independent variable is the variable that is "intentionally altered" by the researcher only and is not affected by any other variable. The Independent variable in the question is the glucose solutions.
2) Dependent variable is the variable that is as a result of the independent variable. The dependent variable in the question is the amount of alcohol.
3) The control treatment that should be given to the control group should be water. The control group is the group in which other groups are usually compared to and are hence given the control treatment.
4) Control variable is the variable that is kept constant throughout the course of an experiment. The control variable in the question is the yeast.
5) The type of graph that will best represent these data is the bar chart. The glucose solution will be on the x-axis while the amount of alcohol produced will be on the y-axis.
WILL GIVE BRANLETS
What fraction does Point A on the number line below represent? A horizontal number line is shown from negative 1 to 0 to positive 1. There are tick marks to show increments of 1 over 8. Only the whole numbers are labeled. Plot Point A at 2 tick marks to the right of 0. fraction 4 over 8 fraction negative 4 over 8 fraction 2 over 8 fraction negative 2 over 8
Answer: the answer is 2over8
Explanation: the top person is wrong cause negative is to the left and positiveis to the right
pls give brainliest tell me if im wrong
The fraction that Point A on the number line below represent is negative 4 over 8. The correct option is B.
What is a number line?A number line is a picture of a graduated straight line that serves as a visual representation of real numbers in elementary mathematics.
Every point on a number line is assumed to be a real number, and every real number is assumed to be a point.
Number lines are horizontal straight lines with integers placed at equal intervals in mathematics. A number line can represent all of the numbers in a sequence.
The correct answer is -4/8. There are seven marks between 0 and -1, and -8/8 is -1. You count the lines from 0 to A, and you get four lines. Each line represents one eighth.
Thus, the correct option is B.
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Your question seems incomplete, the missing image is attached below:
Organelles such as mitochondria and chloroplasts are hypothesized to have originated by _______, by which larger cells engulfed smaller cells.
Answer:
Endosymbiosis
Explanation:
Organelles such as mitochondria and chloroplasts are hypothesized to have originated by Endosymbiosis , by which larger cells engulfed smaller cells.
The endosymbiosis theory is a biological theory of evolution which states that eukaryotic cells were formed from prokaryotic organisms.
define prediction and how it is used form a hypothesis
Answer: upon previous measurements, observations, and experiments, that attempts to explain a natural system or part of a system. Following the scientific method, a scientist sets up an experiment to test the hypothesis.
Explanation:
Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that
apply.
Both involve the melting of solid materials in the nebula.
Both involve the formation of solid particles from nebular materials.
Both involve the work of the gravitational push on nebular materials.
Both involve the trapping of gases and the clumping of masses of matter.
Both involve the growing of gas grains with the addition of atoms and molecules.
The statements which describe the processes involved in the accretion of planetesimals and protoplanets are:
II. Both involve the formation of solid particles from nebular materials.
IV. Both involve the trapping of gases and the clumping of masses of matter.
Accretion can be defined as the accumulation of coastal sediment, sand or land mass on a tectonic plate at a subduction zone over time.
Planetesimals refers to the small celestial bodies of a combination of dust, rock and gas which combines to form the planets, after the solar system begin to form.
Protoplanets can be defined as a large collection of matter within a giant cloud of gas and dust in orbit around the sun and developing into a planet. Thus, a protoplanet is a large planetary embryo in its early stages of evolution through accretion.
Basically, the processes involved in the accretion of planetesimals and protoplanets are;
The formation of solid particles from nebular materials.The trapping of dusts, gases and the clumping of masses of matter such as rocks.Read more: https://brainly.com/question/10337469
Can traits of organisms be improved? Why? Explain.
Answer:
A single organism can not see an immediate improvement in their traits. Traits of a population can, however, be improved by means of microevolution. By this, I mean natural selection. Organisms with traits that are better suited towards an environment have a greater probability of surviving, meaning that there will be a larger output of offspring with these same traits. This causes gradual change and evolution over time, as more and more offspring receive traits that allow them to survive in their environment.
I hope this is able to help you. If you have any other questions, feel free to leave a comment. I am happy to help ^_^
difference between w subcellular and acellular particles
Explanation:
The main difference between acellular and cellular organism is that acellular organism doesn't contain cells and cellular organism contain cells.
3. A survey of animal life in a pond suggests that a native fish species no longer
inhabits the pond. The biologist leading the survey hypothesizes that the pond has
been made more acidic by acid precipitation. She thinks that this acidity has made
the pond uninhabitable by this fish species. The biologist has enlisted a chemist to
help her analyze the situation and decide whether her hypothesis is supportable
a. What is the first chemical test the chemist should perform to help the biologist
test her hypothesis? (0.5 point)
Think about the biologist's assertions about a change in the pond water
acid test
Explanation:
the first test the chemist should do is an acid test
PLEASE HELP URGENT ILL GIVE YOU BRAINLIEST Please describe how latitude and solar energy create different climate zones on Earth.
Answer:
Different latitudes on Earth receive different amounts of sunlight the amount of sunlight that a particular latitude receives changes with the seasons.
imagine a bodybuilder flexing their muscles. which type(s) of tissue go into that action?
Answer:
The tissues that come into action are cartilaginous, bone, muscular and tendon.
Explanation:
It must also be taken into account that the joints are the queens of contortionist movements, they are the ones that are most in demand, and the ones that most control the movements together with the proprioceptors and the muscular golgi reticulum.
Joints are not mentioned in the answer because they are not a tissue, but a set of tissues.
A group of the same cells working together make up tissues. Two or more tissues working together make up the_____ Response area of organization
Answer:
limb
Explanation:
the answer is limbs
Two or more tissues working together make up organs in the body.
What are tissues?Tissues are formed of group of cells. they have specific origin and function.
The tissues forms organs and organ system in the body of an organism.
Based on their ability to perform different function and distinct morphology, tissues are classified into four main types.
Epithelial tissueConnective tissueMuscle tissueNervous tissueEpithelial tissues create a protective lining around the delicate organs. They occupy the linings of digestive track, urinary track, etc. Epithelial tissues are protective and secretory in functions.
Connective tissues connect the organs in the body and also present in fat storing cells. Blood is an example of specialized connective tissue.
Muscle tissues have the property of contraction. Skeletal muscle, smooth muscles and cardiac muscles are present in the body of an organism.
Nervous tissues contain specialized nerve cells for the conduction of information and chemical signals from central nervous system to various parts of the body.
Therefore, tissues are important in control, co-ordination and regulation of body functions.
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advantages and disadvantages of performance enhancing drugs and athletes
The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, two squirrels, and millions of bacteria. Together, all of these organisms represent a(n)
Answer:
hey umm can u help me on my homework
Explanation:
Its NM history
According to the scientific theory of how the universe was formed, which statements true?
Answer:
The universe was formed by a by the BIG BANG.
If i'm right plz mark be brainly.
Explanation:
how many fox cubs do they get 1.5-10 2.1-3 3.8-15
Answer:
5-10
Explanation:
Answer:
5-10
Explanation:
Identify the best 2 problem questions about things you might be observing right now.
please help ASAP!!!!
Answer:
Option 2 and 4
Explanation:
i think it is option 2 and 4 because it tells us what a character does :)
The scorpion and moth are active at night. Scorpions feed on moths and other insects that are also active at night. a Predation b Commensalism c Parasitism d Competition
Answer:
A. Predation
Explanation:
Predation involves an organism or animal feeding on other animals as a source of food without the addition of other animals who also eats the same source of food as it.
The scorpion and moth are active at night. Scorpions feed on moths and other insects that are also active at night. This only talks about the Scorpion and the various food sources it has which include moth and other night insects
Why are carbon compounds do important to life?
Ans: A compound found mainly in living things is known as an organic compound. Organic compounds make up the cells and other structures of organisms and carry out life processes. Carbon is the main element in organic compounds, so carbon is essential to life on Earth. Without carbon, life as we know it could not exist.
functions of the circulatory, respiratory, digestive, and endocrine systems?
The Circulatory System is about the Blood and the heart: they deliver oxygen to the rest of the body (except lungs). AFTER they deliver the oxygen they get the waste (Carbon Dioxide) and deliver it to the LUNGs (Respiratory System)
The Respiratory system is about the Lungs, Bronchi, Alveoli, Trachea, etc. They EXCHANGE the carbon dioxide from the blood with oxygen, they do this in the ALVEOLI (a small, grape-like sockets in the lungs).
The Digestive System consist the Esophagus, Stomach, Intestines, Gallbladder, and Anus. They Digest the food, they ABSORB the nutrients from the food we eat and we poop out the UNNECESSARY wastes.
In the carbon cycle, all animals must consume
other organisms because
A. they can not absorb enough carbon from water.
B. they cannot absorb carbon directly from the air.
C. they are in competition with plants for available
carbon.
D. they require carbon to perform photosynthesis.
Answer:
B is the anwser, I think.
Explanation:
1. animals cannot perform photosynthesis
2. animals cannot go into competion with plants because plants are in a total different kingdom
3. Carbon is not in water, yes there might be a charcol-carbon water filter, yet carbon isn't in water
Which organelle is paired properly with its function?
As dehydration progresses and blood volume decreases, blood pressure will ______ and heart rate will _______.
Answer:
the blood pressure will increase and the heart rate will stay the same
Explanation:
Answer:
rise, fall
Explanation:
A population crisis usually occurs in a country that has:
A. minimal resources to support the population
B. lower average incomes
C.
a shortage of food
D. all of the above
Earth can be divided into how many physical layers?