Answer:A. Both animals and plants have changed over time.
Explanation:
Because plants and animals go through adaptations.
Answer:
Kinetic energy is the energy of motion so to figure out that it’s not changing is if the object is still moving. If it’s staying still or is at rest, it is presenting potential energy, which is when energy is being stored inside the object.
The troposphere protect the molecules because there are higher layers on top. This makes life possible on Earth.
Answer:
mass number
Explanation:
yeah mass number is the total of protons and neutrons
for example carbon has 12 proton and 12 neutrons therefore it's mass number is 24
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