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:
Many cases seem to occur without an apparent cause, while some may occur due to a genetic ( inherited ) defect, environmental exposure during pregnancy, or a combination or both factors. Syndactyly may also occur as a part of an underlying genetic syndrome and can be found in over 300 different genetic syndromes
The answer is:
When it is summer in the Northern Hemisphere
Answer: b) storing the genetic code providing substrate for the citric acid cycle providing electrons to the electron transport chain.
