Which of the following is not one of the marine zones?

a. aphotic

c. abenthic

b. intertidal

d. photic

How are rotation and day related

Which cell lacks a nucleus? A. Muscle cell B. Euglena C. Fungal cell D. Bacterial cell

Name 3 factors which can speed up diffusion and osmosis

Why is pollen needed in plant reproduction? A. fertilization takes place in the pollen B. pollen contains the egg cell C. pollen contains the sperm cell D. egg cells stick to pollen

What is formed when acids and bases are mixed together

Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: 1. an allopatric barrier to reproduction. 2. a postzygotic barrier to reproduction. 3.

A group of cells working together is known as what

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.

How is a scientific hypothesis best evaluated?

The overall population of a species decreased. What could have occurred to make this happen? The immigration rate increased, while the death rate decreased. The birth rate decreased, while the death rate increased.