Help I'm stuck The scientific theory of evolution is accepted by scientists as a way to explain the
diversity of life on Earth. Which best describes the process of evolution?

1.Populations gradually change over time.
2.Populations change rapidly and then go extinct.
3.Populations go extinct and new species take their place.
4.Populations change into new species when the environment changes.

This fossil is of a species that no longer exists on Earth. What is this fossil evidence of?
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1.evolution
2.extinction
3.natural selection
4.overproduction

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

Is cutting your nails a physical or chemical change

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol