I think carbon and hydrogen.
Answer:
natural selection
Explanation:
According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.
Because it could harm wildlife.
That instant ... typically some moment on june 21 or 22 ... marks
the beginning of the northern hemisphere Summer.