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15) which organelle is found in paramecia cells, but not plant cells? a) nucleus b) nucleolus c) mitochondrion d) contractile vacuole
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During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming
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In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -
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Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.
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15) which organelle is found in paramecia cells, but not plant cells? a) nucleus b) nucleolus c) mi...
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