In an ecosystem, which component is not recycled?

1) water

2) energy

3) oxygen

4) carbon

The main nerves coming off of the brachial plexus are?

Explain the cell theory and distinguish between the three basic types of cells.

In a Punnett square: A. all the possible types of sperm are lined up either horizontally or vertically. B. all the possible types of eggs are lined up either horizontally or vertically. C. the results show the offspring's expected genotypes. D.

Which system controls the female reproduction system?

How does sexual reproduction increase the genetic diversity among a population

ct one: a. provides support to long bones b. prevents overactivity of osteoblasts. c. allows for continued bone lengthening during maturation. d. has an unknown function.

How macromolecules are broken down and used to make new molecules.

How do soils form? A. Plants cement mineral particles together to form soil. B. Plants provide organic matter and minerals to make soil. C. Erosion transports mineral particles, and plants die and decay. D.

Give three examples of places bacteria live.

How can scientists learn from observations