B, because as energy is move up form the phyramid, energy is lost.
Muscle cells do not form different types of tissues, the muscle tissue is one of the 4 basic categories of tissues found in humans
I think the correct answer from the choices listed above is option D. Destruction of tundra vegetation will likely result in melting of the permafrost. The tundra ecosystem is extremely sensitive to disturbance with little ability to restore itself. The melting of the permafrost will <span>cause the collapse of ground and loss of soil. </span>