Why do plants require oxygen?

Higher animals and plants most likely have

How many times does a hummingbird flap its wings in a second

Bacteria are crucial for the production of which gas? a. oxygen b. nitrogen c. water vapor d. carbon dioxide

Reasons why humans aren't herbivores and are omnivores.

If a true-breeding white flowered plant is bred with a true-breeding purple flowered plant, what are thegenotypes of the offspring? a. heterozygous dominant b. heterozygous c. homozygous dominant, heterozygous, and homozygous recessive d.

How does the respiratory system interact with the circulatory system? A. The circulatory system removes oxygen from the body to make room for carbon dioxide in the respiratory system. B.

Which layer will become saturated first when rain falls?

Which sphere does a volcanologist most directly study

Identify the components of seawater

Glycogen belongs in the class of molecules known as