(05.02 lc)
which of the following terms best describes a group of galaxies?

select one:
a. cluster
b. constellation
c. solar system
d. universe

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?