I think it’s C, but I would try to double check that! I’m so sorry if it’s wrong! :)
The place where two plates collide is called a convergent boundary
To sum it up while using the words needed, the greenhouse effect is heat and energy get trapped in the earth’s atmosphere and cause the temperature to rise and damages life on earth.
I’m pretty sure the answer is A
The Ia Drang valley is in the Central Highlands
It's located near the Pleiku area in the Central Highland of Vietnam. On November 1965, this valley became the battle ground between United States and North vietnam in the battle of La Drang