Answer: (1) photosynthesis occurred
Explanation: The photosynthesis process in cianobacteria changed the composition of earth's atmosphera, rising oxygen levels. This could be possible since photosynthesis used energy from the sun to produce energetic intermediaries to synthesize sugars, and as byproduct due to water photolisis, is oxygen.
Yes and to make sure just check the comments
<span>If you locate an animal that has segmentation and cephalization as well as deuterostome embryonic development, the phylum that this animal will belong to is A. chordates.
The remaining options do not have these characteristics that only chordates, such as fish, mammals, amphibians, reptiles, and birds have.
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Answer:
moss hornworts seed plants
Explanation: there plants that could be in the water.
