Nuclear fusion occurs in which region of the sun?

a. core

b. corona

c. chromosphere

d. convective zone

What is a concentration gradient? what does it mean if a molecule diffuses down it's concentration gradient?

All chemical reactions in living things take place in what kind of a solution

Plants show turgor pressure when cells are losing water from their water vacuoles. cells contain water vacuoles that are full of water. water is being used up in photosynthesis. water is being evaporated from the leaves.

Which of the following is NOT a function of blood cells? A. regulate body temperature B. fight infection C. gather sensory information D. transport nutrients

Which scientist most strongly supported the idea that evolutionary changes occurred because there was a need for them

Damage to which structures may result in a heart murmur?

How do humans effect the ecosystem

What are some examples of other substances eliminated by the kidneys? check all that apply?

Match the researchers with their discoveries. Demonstrated the phenomenon of transformation, but did not identify the transforming principle. Answer 1 Identified DNA as the genetic material in bacteriophages. Answer 2 Determined the structure of DNA.

A spaceship is designed to support animal life for a multiyear voyage to the outer planets of the solar system. plants will be grown to provide oxygen and to recycle carbon dioxide.