After the troposphere, which later of the atmosphere has the next coldest temperature?

How have cactuses adapted to the fact that it almost never rains in the desert? A They're covered in spikes. B They have thick, pleated stems. C They have big, waxy leaves. D They're camouflaged.

Practice 1: Which of the following are the major structures of the nervous system. Check all that apply. A. Brain B. Heart C. Lungs D. Stomach E. Spinal cord F. Nerves

Describe what happens when you click on the chromosomes during telophase I.

1) A plant gets 628.3 kcal of energy from the sun, what energy is left at the quartenary consumer level? 2) a food chain receives 650 units of energy from the sun. HOW much is still available at the tertiary consumer level?

Which part of the cells acts as a barrier to control what enters and leaves the cell?

What are chemical mechanisms that start a reaction

A person cannot become a problem drinker by drinking beer. a. true b. false

Which is the best description of a galaxy?

Evrey cell contains DNA. The main purpose of DNA is to store the genetic info. How does DNA control the cell? A. DNA activates nerve signals B. DNA determines what proteins are made C. DNA protects the cell from invaders D.

Which combination describes the plasma membrane? a. hydrophilic interior, hydrophobic exterior b. hydrophilic interior and exterior c. hydrophobic interior, hydrophilic exterior d. hydrophobic interior and exterior?