Use density to identify an

substance.

A. unknown

B. sink or float

C. physical property

In liver cells, the inner mitochondrial membranesare about five times the area of the outer mitochondrial membranes. What purpose must this serve? a. It allows for an increased rate of glycolysis. b.

How would the gravity change if the earth was farther away fro maybe sun?

At what temperature does skin death and injury occur

A species becoming dependent on another species is called what

Which of these rocks forms from lava that cools very quickly? A) schist B) gneiss C) granite D) obsidian

The largest mass extinction event in the history the Earth occurred at the end of the ___ period. A. Cambrian B. Ordovician C. Devonian D. Permian

Metamorphic rock transforms to sediment by

This element is need for cellular respiration

Suppose a humans bone marrow was removed changed and returned to his body would the change be passed onto the patients children

What is the importance of the carbon and nitrogen cycles to ecosystems?