According to astronomers the big bang occurred approximately 14 billion years ago

A codon encodes a specific

Which of the following describes the gas exchange that occurs in the lungs? A Carbon dioxide enters the body, while oxygen leaves the body. B Oxygen and carbon dioxide both enter the body.

What era is before and after the precambrian?

Which of the following is not a trait of mangrove trees? a. They excrete salt through their leaves. b. They do not tolerate highly saline environments. c. Thy have two types of specialized roots. d. They absorb oxygen through their roots.

Describe what happens during cytokinesis in animal cells.

Which structure in a cell makes protein

Do Genes make up chromosomes.

Foxes in the Arctic primarily eat hare. Hare eat plants, such as berries, leaves, and grass. If the plants in an Arctic area decrease in number, what will most likely happen to the populations of both the Arctic fox and the Arctic hare? A.

What is the purpose of the biogeochemical cycles?

Strong trading kingdoms emerge in w. africa because of an abundance of salt and?