Answer:
Control environment having no fish, seal or squid only sea otter.
Explanation:
If a killer whale is present in the control environment means no food except sea otter so we can see a decrease in the population of sea otter because the killer whale feed on it. If a killer whale has more food available in the form of fish, squid and seal etc so they will not feed on sea otter and their population will be increasing with the passage of time but when the killer whale is present in an environment which has no fish, squid and seal etc to eat so they feed on the sea otter to survive and as a result the population of sea otter decline.
I think it is A and D (at least those are the ones that made the most sence to me).
Answer:
The change in frequency of an existing gene variant or allele in a population due to random organism sampling.
Explanation:
Answer: protons
Explanation:
Changing the number of protons would change it into an atom of a different element.
Answer:
Everyone needs to be trained for good skills. Just because they are an investigator does not mean they instantly have good observation skills. So this question is false (unless I am wrong at least I tried!)
