91 days. it takes 365 days to go all the way around the sun. so divide that by 4 and you get 91
Answer:
Step 2: The right ventricle pumps the oxygen poor blood to the lungs via pulmonary valve. Step 3: The left atrium receives oxygen -rich blood and pumps it to the left ventricle. Step 4: The left ventricle pumps the oxygen-rich blood via aortic valve, submitting this blood through the entire body.
Explanation:
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The answer is biomagnification. <span>Bioaccumulation</span> involves <span>the
build-up</span> of a pollutant from the environment to an organism in a food
chain. Biomagnification refers to the tendency of pollutants to concentrate as
they move from one trophic level to the next. The substances become
increasingly concentrated in tissues or internal organs as they move up the
chain.
<u>Answer</u>: works optimally at 20°C
Enzymes are a broad group of biological catalysts that have the role of accelerating chemical reactions by binding to molecules and altering them in specific ways. They are essential to the correct functioning of the body.
Enzymes function only at certain temperatures and pH ranges. The enzyme shown in the graph works optimally at 20°C. This is shown by the fact that the reaction rate, enhanced by the enzyme, reaches a maximum at this temperature. The higher the temperature, the more effective the enzyme.
However, at temperatures higher than this optimal threshold, the enzyme will gradually decrease in efficiency. To high or low temperatures will have this effect.
