The lichen- a close relationship of a fungus and an alga that benefits both. A. Mutualism
B. Commensalism
C. Parasitism

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

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

Which action is a reflex action. a. asking for coffe in a cold climate b. blinking when light is flashed in the eyes c. drinking water when thirsty. d. swallowing food e. taking an exam