B . Excessive commercial fishing
Reason: the other options are good things this is the only bad thing
This is called the prophase which is the second stage of mitosis.
Explanation:
The quantity of energy decreases down each trophic level as only 10% of the energy at the upper level is transferred to the next level, the remaining 90% is lost as heat during metabolic process. Through the energy pyramid we can explain how energy is lost at each trophic level, the number of consumer at each trophic level that will benefit from the transfer of energy depends on the size and quality of the energy from the autotrophs
Answer:
Circulation and Digestion
The muscular system and the circulatory system work with the small intestine. The muscular system helps the small intestine break down food. The circulatory system works with the small intestine and gets nutrients to the rest of the body.
