Answer:
<em>The sun or solar energy is at the start of almost every energy
</em>
<em>
chain.</em>
Explanation:
Healthy Ecosystems I believe
Answer:
1. D- Within cultures that rely on milk-producing animals, individuals who tolerated lactose had a survival advantage.
2. B- Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random.
3. A- An interferon activates the body's immune system response to a virus.
4. D- Each persons immune system employs different tactics to get rid of the virus.
5. D- yes, because mutated viruses are able to infect more hosts.
i just did this test, 100% with these answers
Answer:
<em>Definition. A ribosome is an intercellular structure made of both RNA and protein, and it is the site of protein synthesis in the cell.</em>
Hope its helpful!
Cigarette smoking decreases speed in track runner, due to the fact that their lungs have black spots. Making it harder for them to breathe. And harder to breathe causing slowing in speed.
