Which upper chamber of the heart contains oxygen-rich blood? a. the right atrium
b. the left atrium
c. the right ventricle
d. the left ventricle

When species lose their habitats they may..

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Which is one example of a phenotypic change that is not genetic