Part a use the following information to answer the question(s) below. you are given four test tubes, each containing an unknown protist. your task is to read the following description and match these four protists to the correct test tube. when red and blue light are shone on the tubes, oxygen bubbles accumulate on the inside of test tubes 1 and 2. chemical analysis of test tube 1 indicates the presence of a chemical that is toxic to fish and humans. chemical analysis of test tube 2 indicates the presence of substantial amounts of silica. microscopic analysis of organisms in test tube 3 reveals the presence of an apicoplast in each. microscopic analysis of the contents in test tube 4 reveals thousands of cilia on the surface of the organism. test tube 4 contains

Many bird species build nests in which they raise their offspring. one of these species is known as the magnolia warbler. breeding pairs of magnolia warblers build nests out of pieces of grass and twigs. the female warbler will then lay her eggs in the nest and sit on the eggs for a few weeks until they hatch. after the offspring have hatched, the female will continue to sit on the newborn chicks to keep them warm. both the male and the female bring food for the offspring to eat until the young are mature enough to find food on their own. which of these most likely describes why birds such as the magnolia warbler build nests in which to raise their offspring? a. nest building decreases the amount of energy used by the parent birds to raise their offspring to adulthood. b. nest building increases the probability that the offspring will survive and eventually produce offspring of their own. c. nest building decreases the amount of food that the offspring require the adult birds to provide. d. nest building increases the probability of the offspring being located by airborne predators.