How many elements are in the formula 4NaCO.?* 1 point
1
2
3
4
How many molecules are in the formula 4 NaCO.?*
1 point
O 1

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

What two categories of toxins were present in the air at dish,texas as a result of the gas pipelines that pass through the area