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.
Answer: The scientific method attempts to minimize the influence of bias or prejudice in experiments. Even the best-intentioned scientists can't escape bias. That's the job of the scientific method. It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results.
A. Tree leaves
Explain: because giraffes are herbivores their diet mainly consists of leaves and plants.
Lysosomes are acidic compartments filled with more than 60 different types of hydrolases. They mediate the degradation of extracellular particles from endocytosis and of intracellular components from autophagy. The digested products are transported out of the lysosome via specific catabolite exporters or via vesicular membrane trafficking. Lysosomes also contain more than 50 membrane proteins and are equipped with the machinery to sense nutrient availability, which determines the distribution, number, size, and activity of lysosomes to control the specificity of cargo flux and timing (the initiation and termination) of degradation. Defects in degradation, export, or trafficking result in lysosomal dysfunction and lysosomal storage diseases (LSDs). Lysosomal channels and transporters mediate ion flux across perimeter membranes to regulate lysosomal ion homeostasis, membrane potential, catabolite export, membrane trafficking, and nutrient sensing. Dysregulation of lysosomal channels underlies the pathogenesis of many LSDs and possibly that of metabolic and common neurodegenerative diseases
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It's called a nutrient.
Nutrients are well, something that all humans need to survive. A certain amount of nutrients keep humans alive and healthy, yet a lack of nutrients will cause them to become sick and slowly die.
Thus, making it so nutrients is a chemical substance that organisms require to live.
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