When the community climax in an ecosystem has only a single type of climax, the development of the climax community is controlled by ___ of that region.

a) the climate

b) the life forms

c) the soil texture

d) the pioneer community

Your teacher says that your hypothesis for a experiment cannot be proven. Do you agree, or do you disagree? Explain your answer

Plant cells and animal cells share many of the same structures, but each type of cell also has unique structures.

I bet you have watched astronauts in the space station on television or on your computer. We see them; we hear them speak.

Five locations are marked on the world map. Which location is most prone to hurricanes? A B C D E

When small stars die, light elements are released. Explain why.

Which processes are caused by convection currents in the mantle? Check all that apply. 1. earthquakes 2. ridge push 3. tsunamis 4. slab pull 5. volcanic eruptions 6. subduction

Imagine that you are studying the food preferences of a lizard species across its range. you have hypothesized that because these populations are fairly separate from one another, the lizards have evolved different food preferences.

An animal cell (left) and a plant cell (right) are shown. Which organelle labeled x in the diagram is found in both plant and animal cells

Where is the name of the process by which coal is taken from earth after the layer of ground on top of it is removed? A) Underground mining B) Coal rig mining C) Strip mining D) Water-blast mining

Depth perception is an important adaptation found often in: a) prey organisms. b) parasites. c) herbivores. d) predators.