Why is humus a natural resource that is important for plant growth?
A. It prevents air from leaking into soil.
B. It provides nutrients for plants to grow.
C. It allows plants to stay in the ground.
D. It provides light for plants to grow.
B. It provides nutrients for plants to grow.
Which phrase defines soil
1.any region that is able to grow grass and other plants
2. A material made of air,organic material,water,and weathered rock
3.the decayed remains of plants and animals
4.the crops that are grown in dirt
2. A material made of air, organic material, water, and weathered rock.
Which energy resource is limited
1.hydropower
2.fossil fuel
3.biomass
4.geothermal
2. Fossil fuel.
Which of these actions will help most with this problem
1.drinking fiftered tap water instead of bottled water
2.reducing the number of water bottles by drinking less water
3.recycling all used plastic water bottles
4.reusing a plastic water bottle at twice