Answer:
False
Explanation:
false becz many animals produce chemicals
called pheromones to communicate.
blood is an example of
Answer:
Blood is both tissue and a fluid. It is because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma) which makes blood a fluid
Explanation:
I majored in Biology.
1 point
Carbon is stored in leaves in various forms, such as sugar. When leaves
decay, they lose mass. Which of the following sentences explains what
happens to the carbon that is stored in leaves when they decay? *
The carbon is destroyed as the leaves decompose
The carbon evaporates
The carbon is converted into nitrogen by bacteria in the soil
The carbon is converted into carbon dioxide and released into the atmosphere
Answer:
D.The carbon is converted to carbon dioxide and released into the atmosphere
Explanation:
Plants are thought to have evolved from aquatic algae. true or false
Answer: false
Explanation:
Jim found a chart that showed information on ecosystems. He noticed that the chart was subdivided into producers, primary consumers, secondary consumers, and tertiary consumers.
Which statement BEST describes the energy relationship found within this ecosystem chart?
A Producers generate less energy than consumers in the ecosystem.
B. Plants produce the most energy for feeding organisms in the ecosystem.
C.Tertiary consumers such as snakes consume most of the energy available in the ecosystem.
D. The insect population has less energy available to it than the frog population in the ecosystem.
Please Help!!! Which two body systems are most affected when a person is participating in a long jump?
A. endocrine and digestive
B. endocrine and muscular
C. skeletal and digestive
D. skeletal and muscular
The two-body systems that are most affected when a person is participating in a long-jump are skeletal and muscular (Option D).
The muscular system is composed of three different types of muscles: smooth muscle, cardiac muscle and skeletal muscle.The skeletal muscles are muscles responsible for controlling voluntary movements (e.g., jump) and they are attached to the skeleton by a type of connective tissue known as tendon.The skeletal system is composed of all bones of the body and they are responsible to provide support and protection to the internal organs.In conclusion, the two-body systems that are most affected when a person is participating in a long-jump are skeletal and muscular (Option D).
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helpppp! which sentence explains why the moon can be seen from the earth at night
here are the options to choose from
Answer:
(A.) the moon reflects light from the sun
QUICK HELP!!!
____ living cells can be the trigger for cancers.What is the missing word in this sentence?
Virus.
Sorry, if anything is wrong
During the Devonian period of Gondwanaland what were the two organisms that thrived?
A) algae and Trilobites
B) land invertebrates and dinosaurs
C) conifers and early mammals
D) angiosperms and humans
E) marine invertebrates and land plants
PLS HELP ASAP
Answer:
about the Trilobites is =Trilobites ( /ˈtraɪləˌbaɪt, ˈtrɪ-, -loʊ-/;[4][5] meaning "three lobes") are a group of extinct marine artiopodan arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (521 million years ago), and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 300 million years.[6] . and about the algae is =Algae (/ˈældʒi, ˈælɡi/; singular alga /ˈælɡə/) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to 50 metres (160 ft) in length. Most are aquatic and autotrophic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem, which are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of green algae which includes, for example, Spirogyra and stoneworts.
Explanation:
which event takes place during dna replication
Explanation:
d. The DNA molecule "unzips" along weak hydrogen bonds
Which of the following actions will provide a negative control for the investigation?
Repeating the experiment at 25°C
Repeating the experiment at 25°C
Repeating the experiment using twice the amount of hydrogen peroxide
Repeating the experiment using twice the amount of hydrogen peroxide
Repeating the experiment using twice the amount of peroxidase
Repeating the experiment using twice the amount of peroxidase
The question is incomplete, the complete question is;
Researchers investigated the influence of environmental pH on the activity of peroxidase, an enzyme that catalyzes the conversion of hydrogen peroxide to water and oxygen gas. In an experiment, the researchers added a hydrogen peroxide solution containing guaiacol to several identical test tubes and adjusted the solution in each test tube to a different pH. The researchers included the guaiacol because it caused the solutions to change color as the reactions proceeded, which the researchers relied on for measuring reaction rates. Finally, the researchers added the same amount of peroxidase to each test tube and measured the rate of each reaction at 23°C. The results of the experiment are represented in Figure 1.
Figure 1. The effect of pH on peroxidase activity
Which of the following actions will provide a negative control for the investigation?
A
Repeating the experiment at 25°C
B
Repeating the experiment using twice the amount of hydrogen peroxide
C
Repeating the experiment using twice the amount of peroxidase
D
Repeating the experiment using heat-denatured peroxidase
Answer:
D
Repeating the experiment using heat-denatured peroxidase
Explanation:
A Negative control is a situation in which a particular reagent added to an experimental set up just as all the other samples is not expected to effect any change in the responding variable.
In this case the independent variable is the pH of the solution while the responding variable is the activity of peroxidase enzyme.
A denatured enzyme is not expected to have any effect on the responding variable. Hence, this is a negative control.
The action that will give a negative control for the investigation is D. Repeating the experiment using heated-denatured peroxide.
A negative control simply means the situation where a reagent that is added to an experimental set up is not expected to have an impact on the responding variable.
It should be noted that repeating the experiment at 25°C will not lead to a negative control for the investigation. On the other hand, the repetition of the experiment using heated-denatured peroxide will lead to a negative control as the responding variable isn't affected.
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What roles do conservation and energy efficiency play in helping us meet our energy
needs sustainably?
Which statement describes an advantage of sexual reproduction over asexual reproduction?
Answer:
One advantage is that secual reproduction provide variation which can help living things survive in different environment. Asexuals cannot have variation.
Explanation:
One advantage is that sexual reproduction provide variation which can help living things survive in different environment. Asexuals cannot have variation.
What is sexual reproduction?When sperm from a male parent fertilizes an egg from a female parent during sexual reproduction, the result is an offspring that is genetically distinct from both parents.
The genetic diversity of organisms is a result of sexual reproduction. Meiosis, a process that creates sperm and egg cells, is the first step in sexual reproduction.
Because they have half as many chromosomes as the parent, these cells are known as haploids. A diploid zygote is created during sexual reproduction when a male parent's haploid sperm fertilizes a female parent's haploid egg.
Therefore, One advantage is that sexual reproduction provide variation which can help living things survive in different environment. Asexuals cannot have variation.
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Why immobilized enzymes are widely used in industry? Explain, please
Answer:
just go with your instincts
2. mRNA is transcribed from molecule of
Answer:
During transcription, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule, which is then processed to form mature mRNA
Explanation:
Brainliest please?
You are sitting in a room with a door on your lef
a wall of windows on your right, a desk in front
you, and a bookcase behind you. This statement
uses reference points to describe your
A speed
B
velocity
C position
D
motion
Answer:position
Explanation:
Answer:
c. position
Explanation:
A specieces that impacts the survival rates of another species in an ecosystem is known as
a
niches species
b
extinct species
c
endangered species
d
keystone species
The evolution of membrane-bound organelles in eukaryotic cells resulted in many benefits to the cell. Describe three membrane-bound organelles, and explain their functions.
The mitochondrion is a membrane-bound organelle that provides energy by ATP synthesis (oxidative phosphorylation)
The lysosome contains about 40 hydrolytic enzymes that help with cellular digestion.
The Golgi apparatus plays an important role in the excretion and packaging of vesicles.
The process by which a nucleus divides into two new identical nuclei is called-
nuclear fission..................
Which of the following cell structures is the site of photosynthesis?
Answer:
if chloroplast is one of the answers then that's the answer.
Explanation:
so I am going with chloroplast.
PLEASE FAST
If Earth did not rotate and there were no Coriolis effect, surface wind
direction would primarily be *
From east to west
From west to east
From the poles to the equator
O From the equator to the poles
If Earth did not rotate and there was no Coriolis effect, the surface wind direction would primarily be from the poles to the equator.
What do you mean by the Coriolis effect?
The Coriolis effect may be defined as making things traveling long distances around the Earth appear to move at a curve as opposed to a straight line.
The Coriolis effect is responsible for the blowing of winds from the east to the west. It makes the wind system twist counterclockwise in the northern hemisphere and clockwise in the southern hemisphere. Without its presence, the direction of wind gets opposed.
Therefore, if Earth did not rotate and there was no Coriolis effect, the surface wind direction would primarily be from the poles to the equator.
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When the water availability of a plant's environment decreases, the plant can respond by closing its stomata. This reduces the amount of water that the plant loses through its leaves due to transpiration. Closing the stomata also reduces the amount of carbon dioxide that the plant can take in through its leaves, which will most likely result in A. a decreased rate of photosynthesis. B. no change in the cellular processes of the plant. C. an increased rate of photosynthesis. D. an increased rate of cellular respiration.
Answer:
A. a decreased rate of photosynthesis.
Explanation:
Stomata is a structure in the leaves of higher plants, which they use majorly for the purpose of gas exchange. However, the process whereby plant loses water called transpiration also occurs via the stomata. In a situation whereby the availability of water in a plant's environment is low, the plant responds by closing its stomata in order to conserve water (reduce the amount of water that the plant loses through its leaves due to transpiration).
Closing the stomata by plants means not allowing ample carbon dioxide (CO2), which is needed for the process of photosynthesis to occur, to enter the plant. This will most likely result in a DECREASED RATE OF PHOTOSYNTHESIS.
how does the flu impact public health
Answer:
major public health concern. Annually, flu causes illness in a substantial proportion of the U.S. population and may result in serious complications, including events leading to hospitalization and death. Influenza viruses are highly unpredictable.Mar 8, 2018
NEED HELP ASAP: List two ways in which the atmosphere would be impacted in the absence of the biosphere. Use complete sentences.
Answer:
If there would be no biosphere on earth the atmosphere would be quite different. There would be no oxygen to support because oxygen is liberated by plants in photosynthesis so no plants means no oxygen. The earth would be a planet without life just like Venus and Mars. Therefore, no organism would be surviving in the world.
There would be no negligible green house effect and global warming since it is all created due to activities of men.The earth's atmosphere would be much cleaner and with lesser amount of CO2 and O2 but no organism would be there to use them.
Hope it help!
There would be more carbon dioxide, which would eventually burn away the ozone layer, as well as no oxygen, and all animal and plant life would perish.
What is biosphere?The biosphere is basically comprised up of the areas of the Earth where life can be found.
The biosphere encompasses all the things from the deepest tree root systems to the dark environment of ocean trenches, including lush rainforests, and high mountaintops. Earth is described by scientists in terms of spheres.
Because it is all of life, the biosphere is as important as life itself. Earth would be a lifeless planet like Mars or Venus without the biosphere. Human insecurity grows as natural resources are depleted.
The biosphere is the zone that contains all living things. The biosphere requires the lithosphere, hydrosphere, and atmosphere to exist. There would be no life on Earth if these three spheres did not exist.
Thus, this way, the atmosphere would be impacted in the absence of the biosphere.
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Hola, esto no es sobre la escuela, pero estoy desesperada: Mi gata ayer tuvo 5 crías que ya tomaron calostro, pero la gata se ve mal y muy cansada ,cabe aclarar que sus hijos están todo el día tomando leche pero la gata se ve mal y siento que no le va a alcanzar la leche, la quiero ayudar porque se ve muy mal, cansada y decaída. Me pueden decir algún sustento (casero o no) para poderles darles sin eliminar por completo la leche materna? Quiero que que la gata y sus hijos estén bien. Si me ayudan se los agradecería .
Answer:
Hola, para resolver tu problema debes tener en cuenta tanto a tu gata como a sus crías.
Primero, respecto a la madre, una buena alternativa serian inyecciones de vitaminas y suero, que la ayudarían a reponer energías y a generar más alimento para sus crías. Pero también la ayudaría a sentirse menos decaída, lo cual mejoraría su estado de ánimo.
Por el lado de las crías, si lo que deseas es que se alimenten por otra vía que no sea la de su madre, una alternativa ideal es la leche maternizada artificialmente, que es un alimento específico para gatos recién nacidos, aunque es bastante costoso de adquirir. Otra alternativa, ya casera, es hervir arroz, colar los granos y utilizar el agua en donde se cocinó como alimento para los cachorros. Obviamente, debes dejar enfriar el líquido, pero una vez a temperatura natural tendrá muchos nutrientes que habrá absorbido de los granos de arroz y servirá como sustituto de la leche materna.
If a pure-bred tall plant is crossed with a pure-bred short plant, the offspring will be:
a. Either tall or short
b. All offspring will be medium sized.
c. Some offspring will be tall, some will be short and some will be medium sized.
Which factor is found in a scientific claim? endorsement by famous scientists data collection from only one facility similar results in multiple tests of the claim identical data across all tests of the claim
Answer:
similar results in multiple tests of the claim
Explanation:
e2020 told me so
Similar results in multiple tests of the claim are a factor found in a scientific claim.
What is a scientific claim?The statements made regarding an issue in the field of science are referred to as a scientific claim. Scientific claims are different from any other form of a claim as they are made after a lot of research and are backed by data.
Science is basically a systemically done study of the world around us. People practising in the field of science are called scientists. They collect data, analyze it and based on this analysis they come to conclusions.
Thus a scientific claim is a statement made after coming to the conclusion after analyzing the data.
Even though, a scientific claim is made after thorough research, not every scientific claim is as reliable. The experimentation and analysis can be subject to various errors which can cause a faulty scientific claim.
Therefore, the factor present in a scientific claim would be similar results in multiple tests of the claim.
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Three that live in the savanna are lions, giraffes, and elephants. Choose two of these animals. For each one, describe an adaptation that has enabled it to survive in the savanna. Then tell which which animals in the population would be more likely to survive if a dry season was unusually long.
Giraffes and Elephants: Giraffes have adapted a long neck over time letting them eat and access food allowing them to survive. If a dry season was unusually long they would succeed fine because they are able to eat and drink from the trees. Elephants have survived with similar tactics of eating higher up, they have rough skin allowing them to outlast the heat, and only need water after long periods of time.
The chart shows the total amount of nitrogen oxides (NOx) and sulfur dioxide (SO2) that coal-fired utilities emitted between 1999 and 2013. Based on the chart, do you think the steps taken by the EPA and the factories were effective in reducing air pollution from these two pollutants? Give your reasons.
Answer:
Yes.
Explanation:
If the graph line comes lowers from 1999 to 2013 so it means that steps taken by the EPA and the factories were effective in reducing air pollution. The steps taken by the EPA and the factories were effective in reducing air pollution occurs from two pollutants i. e nitrogen oxides (NOx) and sulfur dioxide (SO2) if they install chimneys which collect these gases and reduce pollution. if the factories uses coal having less concentration of sulphur so less air pollution occurs.
Answer:
Yes, the steps taken by the EPA and factories were effective in reducing air pollution from NOx and SO2 because the emissions of these two pollutants have decreased over the years.
Explanation:
The diagram shows an energy pyramid.
If the flowers contain 50,000 kcal of energy, about how much energy will the lizard obtain from eating the butterfly?
500 kcal
5,000 kcal
50,000 kcal
500,000 kcal
Answer: I would say 500 kcal
I’m not 100% sure though
Please comment if it’s right!
Answer:
A. 500 kcal
Explanation:
every cunsumer it passes it losses a zero
50,000 flower
5,000 butterfly
500 lizard
Breathing is an involuntary process controlled by the respiratory centre in medulla oblongata.
What happens to the rate of respiration of a climber at the peak of a mountain?
(4 marks)
Please help giving the answer and explaining it briefly to mee.. I will give brainliest :)
Answer:
When we travel to high mountain areas, our bodies initially develop inefficient physiological responses. There is an increase in breathing and heart rate to as much as double, even while resting. Pulse rate and blood pressure go up sharply as our hearts pump harder to get more oxygen to the cells.
Explanation:
from online, rephrase