Use the drop-down menu to complete the sentence. When 1 carbon atom combines with 2 oxygen atoms, the resulting substance is called a(n) . Element Compound Isotope Or ion Please help

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.

Describe how alleles and genes are related

How can you tell the difference between rough er from smooth er?