How do scientists know about the structure of the earth? Question 21 options:

We have drilled all the way to the core of the earth.

We have drilled far enough into the earth to reach the mantle.

S waves from earthquakes can travel through both solids and liquids so they tell us what is inside the earth.

P waves from earthquakes can travel through both solids and liquids so they tell us what is inside the earth.

The instructions for making proteins come originally from

Variety of living organisms; includes genetic, species, and ecological types.

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.