What happens when air enters the alveoli of the lungs

The blood vessels that supply blood to the heart itself are the

What sphere is rust found in? Stratosphere, Lithosphere or Atmosphere.

What are the two types of warm air masses that influence the weather in north america name and explain how they typically affect the weather

Checks to see if the DNA has been damaged and if the cell is large enough and healthy enough to divide.

Which of the following are the components of a neuron brain, spinal cord, and vertebral column dendrite, axon, and cell body sensory and motor cortex, medulla, and sheath

When do introduced species become invasive?

If arthropods' appendages were not jointed, how would that affect them?

A student decides to set up an experiment to see if detergent affects the growth of seeds. he sets up 10 seed pots. 5 of the seed pots will receive a small amount of detergent in the soil and will be placed in the sun.

When a liquid or gas is no longer heated, the convection currents what?

An area where the soil contains a great deal of moisture is known as