Which of the following is not true of density? a. density depends on mass and volume. b. density describes how tightly packed the particles are. c. density changes with gravity.

Many people try to eliminate fat from their diets. Which is one reason it is necessary for human to eat fat? A. Fat is the only way to get energy B. Fat stores less energy than polysaccharides C. Every cell in the body must contain fat D.

Which of the following is a service provided by biodiversity? a. Food b. Clean water c. Medicine d. All of these

What are three agents of pollination?

If a population lacks variation (fixed), no individual has any advantageous trait, and the environment changes for the worse. What will most likely happen to the population in terms of natural selection

In Earth's mantle, heat is transferred in large convection currents. within these currents,

Cells are adapted to perform specific functions which of the following terms refers to the capability

Define karyotype ...

Glycolysis occurs in what part of the cell

What occurs to create a growth spurt

Which process describes nitrogen fixation?