Answer:
A.
Explanation:
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The answer is B) Genetic variation
The root tip allows the plant to grow deeper into the soil
Th correct answer would be D! Hope this helps
Answer: E. reforestation
Explanation:
Reforestation is a process of planting trees in an area so as to conserve the land as future forest. According to the given situation, reforestation is the practice which can be used by the biologists to grow nitrogen fixing plants in an area so as to increase the nutrient concentration of the soil which have been depleted.