Which statement best describes the relationship between plants and oxygen? Plants do not need oxygen because they use carbon dioxide in cellular respiration. Plants do not need oxygen because they do not undergo cellular respiration. Plants produce oxygen during photosynthesis and they also need oxygen from the air for cellular respiration. Plants do not need any oxygen from the air because they produce it during photosynthesis.

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction