Which of the following best describes the process by which magma reaches Earth’s surface during a volcanic eruption? A
Magma builds up in the strata until it is released through the vent crater to form lava.

B
Magma builds up in the vent until it is released through the magma chamber at different strata.

C
Magma builds up in the crater then travels through the strata until it is released through the vent.

D
Magma builds up in the magma chamber then travels through the vent until it is released through the crater.

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.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times