Answer:
A.
Explanation:
The arctic soil is so cold that the ground beneath the tundra surface remains frozen all year. This permanently frozen ground is called permafrost. Each summer, when the sun warms the tundra surface, the top few inches of soil thaw. This melted part is called the active layer.
Answer:
That his son would be a disgrace to himself and to the family
Explanation:
The Green Revolution provided B. An increase in the yield of crops forless-developed countries.
The answer is D. in animal cells, the cell membrane allows materials in and out of the cell, while the mitochondria uses nutrients to make energy (ATP) for the cell.
Carbon dioxide is the compound in photosynthesis, I'm pretty sure
