put the steps primary succession in order ? 1 Annual plants such as flowers and weeds begin to grow. 2 * Perennial plants such as grasses and ferns overtake the environment. 3.Lichen and Mosses begin to break dowA Fock As they die, they decompose and their nutrients are added to the soil. 4. E Barren rock is exposed or created. 5.Herbivores begin to appear. Softwood trees begin to grow. 6. Carnivores arrive and a climax community is established. 7. E Omnivores appear and hardwood trees begin to grow.​

Which codon is the code for the amino acid histidine (his)?

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.

What does it mean for an allele to be dominant?