Answer:
Species are adapted to their environments. By understanding the interactions within an ecosystem, scientists can develop an understand of how populations evolve (develop gradually) in response to their environment.
The testicles produce the sperm and the hormones
Answer:
Coronavirus in its own doesn't have an advantage.
I believe that it helps us to prevent other epidemic diseases such as cholera and other diseases that are caused by lack of sanitization.
Since washing hands frequently is the way of preventing coronavirus.
And wearing mask also helps us to prevent other respiratory diseases being transmitted.
A molted external skeleton.
