What is an important chemical that contains
nitrogen which is vital for all living
things

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

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.

The response is the basis for vaccination. primary secondary tertiary none of the above