Soil is a mixture of broken-down rocks, organic matter, and other materials . Plants need soil to grow. Soil forms naturally with Earth's events . Despite this , for people , soil can be considered a nonrenewable natural resource.

Which option describes the reason for this ?

1. Soil takes a long time to form .

2. Human activities can cause loss of soil .

3. People cannot form soil by artificial means P

4. eople are heavily dependent on soil for survival

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

50 points! which of the following is an inference? a burning candle is extinguished when it is covered with a jar. the candle burns longer than expected in a jar that has a plant in it. a plant lives longer than expected in a jar that has a burning candle. there is more oxygen in the jar because there is a plant in it.

How do temperature and salinity affect deepwater currents? question 15 options: 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.