Which of the following best describes the process of evolution?

a. difficult
b. sudden
c. gradual
d. unusual

Why is it important that fibrin is insoluble in water?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

The organelle pictured is found in cells of and is theorized to have once been an independent organism.