What adaptations have plants and animals developed that allow them to survive the extreme climate of the tundra? a) thick fur b) dense hair c) retention of dead leaves d) feathered feet e) all of the above

E) All Of The Above. Because all of them give the plant/or animal a little extra protection, and protects them from the cold.

All the above(Option E)

Explanation:

The adaption that is required by the plants and animals of the tundra region must include the features that allows them to survive in extreme cold conditions.

The plants in the tundra region does allows the falling of dead leaves, they retain the dead leaves in the plant only for surviving in such conditions.

The animals their have thick fur and dense hair so that it can act as insulator to keep their body warm. They have fur in their feet to walk in such cold conditions.

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.