What happens when the lungs recoil?

A. Expiration occurs.

B. Internal respiration occurs.

C. Ribs and diaphragm muscles contract.

D. Inspiration occurs.

What are the positive effect of technology

What could a human living now and a horse living thousands of years ago have in common?

Describe the structure of a female cone in a plant.

The enzyme β-galactosidase catalyzes what reaction?

Because of the Doppler effect, sounds coming from a moving source Question 6 options: A seem louder than if the source were not moving. B are of a higher frequency if the source is moving away from the observer.

How does waste move from the kidney to the bladder in the human excretory systems

A plant uses energy from the Sun to make food. What kind of energy transformation is this? a. light energy to chemical energy b. chemical energy to light energy c. mechanical energy to chemical energy d. light energy to mechanical energy

The major body structures and organ systems form during which trimester

What is the main female sex hormone? is it d? testosterone adrenaline insulin estrogen

What kind of a Erosion involves dissolved particles