Answer:
D. Crop plants have shallow root systems, and most of the mineral nutrients are on the surface.
Explanation:
According to the question, we are required to provide the best explanation for the given sentence which says that crop plants make use of more mineral nutrients than native plants.
Based on this sentence, the best explanation would be that crop plants have shallow root systems, and most of the mineral nutrients are on the surface.
The demographic blow to Eurasian population that has as consequence effect on climate greater than deforestation, this hypothesis is based on the assumption that some events led to abrupt demographic changes that led to the abandonment of cultivated lands in which vegetation grew again and absorbed more carbon dioxide.
Answer:
B,D
Explanation:
I hope these are correct if not sorry! :) Hope you pass