Mitochondria are shaped perfectly to maximize their productivity. They are made of two membranes. The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae. The fluid contained in the mitochondria is called the matrix.
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.
Phylum. The classification system goes: Kingdom, Phylum, Class, Order, Family, Genus, Species. Anything that shares a class also share anything above it.
Genetic diversity decreased as the human population migrated from Africa to other continents because each migration had a chance to obliterate one or more genetic variants.
<h3>
What is genetic diversity?</h3>
The term "genetic diversity" refers to the entire gene pool that a population or species possesses in a specific habitat.
During migration, genetic diversity is essential for adjusting to new environmental situations.
The genetic diversity decreased when the human population migrated from Africa to other continents since each migration had a chance of bringing with it one or more genetic variants.
For more information regarding genetic diversity, visit:
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When cells break down food molecules, energy is stored temporarily in ATP molecules for further processes [such as cellular respiration] or it is released as heat.
