1. Your car's speedometer reads 10,500 miles at the start of your trip to the beach and 10,700 miles when you get back to your house. What was the
total distance
you traveled?

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

dynamic equilibrium is the answer.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

there are two significant figures.