Biology

Biology, 30.08.2019 09:30, jessica28757

Why do scientists believe that life first emerged from the ocean and onto land well after the ancestors of modern day cyanobacteria populated the earth

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Biology, 23.06.2019 07:30, mildred3645

Jayden is taking a test. he has to write why scientists support the theory that life began near hydrothermal vents in the ocean. which point should he include in his answer? a. hydrothermal vents were closest to ocean surface, and therefore could receive oxygen. b. oceans were dry and only had water near the hydrothermal vents in the earlier ages. c. even today, all life forms are first born near hydrothermal vents and they later migrate to land. d. fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.

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2. traditionally, protists were classified in kingdom protista. how has the classification of protists changed? 3. relate cause and effect what is a major reason why scientists need to reclassify protists? 4. apply concepts what three kingdoms arose from protist ancestors? 5. write to learn scientists say that we should not look for the earliest ancestors of animals among modern-day protists. write a short paragraph that explains why.

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Biology, 25.08.2019 20:30, ash123463

Read before picture: scientists observed some fossils of the early ancestors of camels. using the fossils they obtained, they prepared a phylogeny chart for camels. based on this chart, what can you conclude about the relationship between modern camels (camelus) and aepycamelus? answers(there are more than one answers) a.) modern camels share an evolutionary relationship with aepycamelus, but they didn’t directly evolve from them. b.) aepycamelus don’t share any evolutionary relationship with modern camels. c.) aepycamelus are modern camels’ closest extinct relatives. d.) aepycamelus are modern camels’ closest living descendants.

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Biology, 12.10.2019 00:10, he0gaubong

How did cyanobacteria aid the evolution of complex life on land? do you think cyanobacteria are as significant to this process today as they were during precambrian time? need asa its timed

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