Which statement is true in a convection cell

A. Air at the poles rises

B. Air rises at both the poles and the equator

C. Air at the equator sinks

D. Air at the equator rises

Tools which newborns have for survival that are involuntary responses to simple stimuli are called:

How do body systems work togther to defend from illness or injury in the human body or in other animals

Describe a biological system

Why do you think doctors recommend that women avoid most medications and alcohol during pregnancy

Which of the following is a basic need of the cell.

In which type of environment did this fossilized fish most likely live?

5. What is pretexting? How is this used?

The energy usage per capita in Africa and Asia have grown tremendously the last 50 years. Which of these would be a good explanation of why the energy use off these continents has grown more quickly over this time period when compared to North

Describe what happens during the regeneration stage of the calvin cycle

Почему при нехватке кислорода человек может погибнуть? Кратко!