Answer:
A slavery helped Africans become civilized
Explanation:
Calhoun was one of the strongest supporters of slavery before the Civil War. He was a southern politician, strong-opinioned, and he made his states-rights support and slavery support very clear. He tried to support this using the "positive good" argument, which claimed that putting blacks in slavery was helping them become more civilized and providing them with necessities and protection.
Why not B: He was entirely opposed to this, because slavery made him rich.
Why not C: The Dred Scott decision firmly denied the plaintiff (Dred Scott, a slave) citizenship, and said that escaped slaves should be returned to their masters. So Calhoun would not have thought this incorrect.
Why not D: Sumner was an anti-slavery northern senator who was caned by another senator, Preston Brooks, for his rhetoric against the South. Calhoun would have disliked him.
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Answer:
option D.
Explanation:
The correct answer is option D.
Photorespiration consumes O₂ and releases CO₂.
Photorespiration process is a gas exchange process which resembles opposite to the process of photosynthesis where intake is CO₂ and O₂ is released.
Photorespiration process does not produce ATP but it use O₂ to produce CO₂. Photorespiration uses a sugar-phosphate as its primary fuel.
Answer:
The question is non-existent