I had to look for the options and here is my answer:
Based on the attached details about the cattle egrets, how an ecologist would explain this expansion is that, a habitat that has been not been occupied by the egrets and the native herons acquired the biotic and abiotic standards <span>of the cattle egret transplants and their descendants. (This is based on the actual option attached to this question.)</span>
It's harder to find one of the many genes involved in a polygenic trait vs the only gene involved in a discrete trait.
Temperature. Also, you should put more detail into your question, as it's not entirely clear what your asking.
Answer:
D. The cell is the basic unit of living things
Explanation:
Answer: False
Explanation: They are replaced every seven years
