How can sonar be used?
a.) it can be used to locate underwater objects.
b.) it can be used in microscopic surgery.
c.) it can be used to locate objects in outer space.
d.) it can be used in creating images of internal organs.

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.