Answer:
A. Somatic cell nuclear transfer was first carried out in frogs in the 1950s
Explanation:
Alcohol is a solvent and it basically dissolves anything. A lead is spongy and full of holes. When the leaf is mixed with alcohol, the alcohol affects the leaves. The alcohol melts the pigments of the leaf, chlorophyll, which is the green part. This will turn the alcohol green
Gas exchange
When the plant is photosynthesising during the day, these features allow carbon dioxide to diffuse into the spongy mesophyll cells, and oxygen to diffuse out of them.
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