Where do new cells come from

Describe the three major groups of igneous rocks. what are ultramafic rocks?

The sliding filament model of contraction involves: A. actin and myosin sliding past each other and partially overlapping B. the shortening of thick filaments so that thin filaments slide past C.

What happens if you get two concussions?

This crack shown in the lithosphere was created by the movement of two or more tectonic plates. What is this crack called?

What's the feedback mechanism for diabetes

4. A tree dropping its leaves in the fall to conserve water and avoid freezing during winter is an example of?

Which is a single-celled fungus? A. mold B. mushroom C. alga D. yeast

Explain problems with using low-tar, low-nicotine cigarettes.

Some students are comparing the parts of a cell to the parts of the body. Which part best represents the cell membrane and why?

What is the difference between the nitrogen and carbon cycles?