How much methane may be locked up in sediment containing gas hydrates

If cells in the process of dividing are subjected to colchicines, a drug that interferes with the functioning of the spindle fibers, at which stage will mitosis be arrested?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?