What is upwelling?

A. The mixing of two biomes

B. Water moving up from the benthic zone

C. The productivity of an ecosystem

D. When infertile species reproduce

What types of gametes can be produced by an individual with the genotype aabb?

What part of the cell functions in lipid-processing and phospholipid manufacture?

Why are nonnative species a threat to biodiversity? A) They often use up resources that other organisms need. B) They are not able to successfully breed in the wild. C) They release pollution into many environments.

What is the second most abundant element in the human body? Select one: A. carbon B. methane C. water D. oxygen

How are natural areas different from rural areas

Which of the following provides nutrients to a developing embryo, passes wastes into the mother's blood for disposal and forms tissuses of both the mother and the embryo? A.) placenta B.) umbilical cord C.) amniotic or D.) all of the above

Facilitated diffusion can be described as the favorable movement of one solute down its concentration gradient being coupled with the unfavorable movement of a second solute up its concentration gradient. True or false?

Large blood vessels that carry blood away from the heart to body tissues are called

What packages proteins for the transport out of the cell

In one type of cell division, a single cell forms two new cells. This process is called mitosis. What reasoning describes why human skin cells frequently undergo mitosis?