Answer:
Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.
Explanation:
The goods that were spread included paper, food, plants, gold and silver, bamboo, spices, glass, jade, and silk. The ideas that were spread included what people believed in. People from different places were introduced to the the cultures of other traders that came from different places.
Answer= A. Worm in your intestine
False because they wouldnt be there if they had no function
50 percent black coat colour and 50 percent brown coat colour
