Pls where do most metamorphic processes take place? a. at least a hundred kilometers below earth’s surface, in the mantle b. in the first few kilometers below earth’s surface c. at least a few kilometers below earth’s surface, in the lithosphere and upper mantle d. in the mantle and upper core

A. at least a hundred kilometers below Earth’s surface, in the mantle

Explanation:

Metamorphic rocks are rocks which are formed from existing rocks. They change their form which results in their formation. Examples include marble,Schist etc.

They are formed under conditions such as temperature greater than 150 to 200 °C and pressure of 1,000 bar and above thereby causing intense physical or chemical change.

Their formation occurs at least a hundred kilometers below Earth’s surface, in the mantle .

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.