PLEASE HELPITEM BANK: Move to Bottom 2N
N
chromosome number
chromosome number in body cells
chromosome number in gametes
produced by fertilization
product of meiosis
Haploid
Both
Diploid
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40 1/28/2021

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change.

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.

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.