In the Pacific Northwest in the United States, a small earthquake happens off the coast. This is caused by: a - weathering
b - plate tectonics
c - volcanism

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

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.