The bones of a bird are hollow why would this be an disadvantage for a bird

Do mutation always change the outcome of gene expression

1.) which sentence from the autobiography best explains Douglass's purpose for including an expanation of the slae songs? A.

Jason is studying a multicellular organism that can easily move around its environment. This organism must consume other organisms in order to receive energy. Which kingdom does the organism that Jason is studying most likely belong to?

What happens to blood cells when they are exposed to a hypotonic solution? A. The cells shrivel. B. The cells swell.

When a sound wave moves through the air, it causes air particles to vibrate. There are two parts to the tiny movements that result in vibration. During the first part, air particles move closer together as they move into regions of compression.

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?