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EleoNora [17]
2 years ago
6

in high elevation forests n Pennsylvania, ecologists have noticed a serious decline in certain tree species. Some scientists pro

pose that increased soil acidity might be the cause. Whats the phenomenon? A. Mercury contamination B. Decreased in pH caused by climate change C. Acid rain, which is caused by SO2 from combustion mixed with atmospheric water vapor D. Ozone depletion
Biology
1 answer:
Solnce55 [7]2 years ago
5 0

Answer:

I would choose answer B.

Explanation:

Acid rain is caused by combustion chemicals mixing with water vapor in the atmosphere. It normally results in high amounts of acid in the soil, and surrounding bodies of water.

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This allowed these cells of the genetically engineered rice varieties to produce beta carotene. Production of beta carotene imparted golden color to the rice grain and hence, the name.

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