The parathyroid hormone causes what change in bone in order to increase calcium in the blood? increases mineralization of tissue

The population of bison in a prairie ecosystem has significantly declined. What will most likely happen to the grass population the bison feeds on? a. The grass population will increase. b. The grass population will decrease. c.

Organisms can reproduce in one of two ways-sexually or asexually. Amoeba are examples of organisms that reproduce asexually. When amoeba reproduce, they replicate their DNA and then divide in half. Thus, A.

The imaginary line that separates the body into superior and inferior regions is called

Why do ecosystems constantly need new energy

What is the function of the cell memrane

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

what will happen to a base isolated building when seismic wave strike the building during an earthquake

The shape and size of a birds beak would mostly be affected by what environmental limiting factor