A recent outbreak of a deadly virus spread through several countries in Africa, and thousands of people there were affected. Residents of that region were asked not to travel to other countries to avoid the possibility of the virus becoming a(n)

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.

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

Which organ controls breathing? lungs alveoli heart diaphragm