I believe the answer is A+b. Plz mark as brainliest if correct.
Answer:
Muscles pull on the joints, allowing us to move. They also help the body do such things as chewing food and then moving it through the digestive system. Even when we sit perfectly still, muscles throughout the body are constantly moving.
2.What economic and social factors in the United States led to differing ideas about slavery in the North and the South? Explain and support your answer with details.
Northern States,dependent on merchants and trading posts, had no need for slaves, seeing that they were well equipped with machinery and factory job, and needed skilled, trained labor.. Money making was easier, and they had the idea that they could bring these jobs to the South.But the South, which relied heavily on agriculture, and needed a lot of manpower to keep it running. But, unlike the more Puritan North, they decided to rely on slaves, refusing to pay them.So when the North became aware of this, it created upset, and unrest.
Answer:
First two true last 2 false.
Explanation:
