Coal fired power plants are used to create the electricity that we depend on. however, they also release a lot of pollution into the atmosphere through their giant smokestacks.
after a new plant was built in jackson, residents noticed that the statue in the town square had started to fall apart or corrode, and that this was especially noticeable after a rain storm.

what might explain the statue's corrosion?
a) the statue is exposed to wind and sun.
b) someone is probably vandalizing the statue when no one is looking.
c) the statue is probably old enough to start breaking down on its own.
d) the smoke from the plant mixes with water vapor in the air, creating acid rain.

How many chromosomes are in a gold fish?

Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.