Which sentence from the passage supports the idea that the Gaia theory began as a way to solve a mystery? A. "The Gaia theory was first proposed by James Lovelock, a British research scientist."

B. "At the time, he was trying to explain several conditions that puzzled him."

C. "Some people interpret this to mean that the Earth is like a single living organism."

D. "The theory holds that the Planet Earth is self-regulating, much like the human body."​

lil whire

explanation:

16.) true

17.) true

18.) it doesn't say

19.) true

20.) false

explanation:

answer: dinner and a movie with your friends this saturday night.

opportunity cost refers to the benefits that a person or business misses out on when choosing one alternative over another. opportunity costs are easy to miss, but they can be important for decision-making. in this example, the alternative that the person will miss out on is the opportunity to have dinner and watch a movie with friends on saturday, as he will have no money left after buying the cd.

it shaped life in both positive and negative ways. the positive sides of the medieval government was that it had a very strong and military. the citizens felt safer because of the high military interference. the citizens also had a positive attitude towards the artisan class and gave a huge respect to them. there is also a negative side of the government where the government would use the military too much on its citizens which created a sense of autocracy. it was oppressive to the peasants especially to the women.