The answer for this problem is B
Answer:
Muscles pull on the joints, allowing us to move.Muscles make up half of a person's body weight. They are connected to bones by tough, cord-like tissues called tendons, which allow the muscles to pull on bones. If you wiggle your fingers, you can see the tendons on the back of your hand move as they do their work.
Answer:
B.soil that is frozen solid all year
C.summer thaws combined with frozen permafrost
D.the overflow of a large lake each summer
Answer: D
Explanation: Because new dog breeds are made when people mix two different breeds together to make another breed
