Answer:
At one point in Earth's history the mountains were under water
Explanation:
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Answer: lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air).
Explanation: Hope this helps!!!
I dont remember much of biology but i do remember my teacher saying something about phosphate backbone, i know its not much help. sorry!!
I think its because it has layers to separate the sugar's
For the first question-a bicep is a large muscle in the upper arm which flexes the arm and forearm, a tricep is a large muscle at the back of the upper arm and a deltoid is a thick triangular muscle covering the shoulder joint and used for raising the arm away from the body.