It's either the Sierra Nevada or the Great Plains, I'm a bit confused with how you worded your question.
Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis
Answer:
Event 1 is true.
Explanation:
Because if you watch a documentary you could know this and you don't have to always ask people for the answer, but it is event 1.
When the air temperature increases, the temperature of the soil increases as well, usually more than the air temperature itself.
When the air temperature decreases, the temperature of the soil decreases too, very often more in lesser amount than the air temperature itself.
Both the air and the soil are able to increase and decrease temperature very quickly. The air though is able to change its temperature quicker, while the soil needs a little more time because it is able to accumulate certain amounts of heat for some period of time.
Some of these are accountable, but the main reason the settlement boom happened is D, gold was discovered.