Answer:
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
Electrical resistance is the opposition to current flow. See also a discussion of AC and DC, as well as an introductory video.
Explanation:
Answer: B
While the other answers are somewhat correct, they contribute to the fears that Colin's been grappling with since birth. It isn't until he decides he's not an invalid or disabled that he realizes it was all in his head.
Answer:
B. (I can't see the whole answer, but that's my best choice. Next would be C.)
Explanation:
Themes can appear in stories, most news articles don't really have themes, and not all themes are specific to one story.
Answer:
1. supply of water to (land or crops) th help growth, typically by means of channels
2. wash out (an organ or wound) with a continuous flow of water or medicine
