A stable physical mixture of two or more substances is a (n):

solution

suspension

emulsion

element

Which nutrient enhances iron absorption from the intestinal tract?

Bacteria and humans are similar in that they both

Decreased flow of blood in the veins that may cause the veins to be visibly distended is called

Which part of the cell is like a recipe book?

A truck whose bed is 2.5 m long 1.5 m wide and 1.0 m high is delivering sand for sand sculpture competition. About how many trips must the truck make to deliver 7m of sand

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.

Which of the following terrestrial biomes cannot be found in the United States? A: temperature deciduous forest B: tundra C: desert D: grassland/prairie

Which of these food sources does the bald eagle not feed on? plants fish carrion mammals