Answer:
Igneous rocks contain randomly arranged interlocking crystals.
Explanation:
The size of the crystals depends on how quickly the molten magma solidified:
magma that cools slowly will form an igneous rock with large crystals
lava that cools quickly will form an igneous rock with small crystals
Answer : Option A) He is studying oxygen, which can also be found in proteins.
Explanation : A scientist is examining the role of an element found in fats and carbohydrates of living things. Oxygen is the element which makes up to 65% of human body mass. This is also found in proteins inside the body.
B) lipids since I saw this answer before
