A forest fire destroys trees in a large area. The forest rangers use the burned area to study the effect of different types of grasses on soil erosion. They
choose ten plots of ground that are the same size. Each of these plots receives
the same amount of sun. Each of these plots also has the same kind of soil and
the same slope. The rangers plant each with a different type of grass.
Measurements of soil erosion are made every week for the entire
summer. What hypothesis is being tested in this study?
If areas are burned over, then they will have greater erosion than forested areas.
If the slope of the land is changed, then soil erosion is affected.
Certain types of grass have a greater effect on reducing soil erosion than others.
O If grass is planted, then the amount of soil erosion will be reduced.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

its 42

i say its d?

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation:

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.