If the skeletal system gives us structure and support, what part of a house is the skeletal system most like?
a) the roof of a house
b) the frame of a house
c) the plumbing of a house
d) the crawl space under a house

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.

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.