How do you get hiv in details

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to

What does spontaneous generation mean?