Answer:
the answer is B because primary is when de breaking of rocks n secondary about the area
Explanation:
B
The density of mars is 3.93 g/cm3
The cell membrane in humans and animals behaves most like the second option. A police officer who allows select people to enter and leave a crime scene. The cell membrane allows particles through to the cell that are vital for the cell to function, while keeping out unwanted substances.
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They are called Consumers I believe hope that helps ☺
Golgi bodies
Packages protiens for transport out of a cell for storage within
