The first direct evidence of primitive cellular life was the 1977 discovery of <u>microbial </u>fossils in the swartkoppie chert, a type of granular sedimentary rock rich in silica.
Some of Earth's high-quality-preserved fossil microorganisms occur in rocks from the Ediacaran period of geologic time, which runs from about 635 to 541 million years ago. Scientists do not absolutely apprehend how this fragile microorganism became fossils. however, a new experimental look at is now dropping more mild.
Some microorganisms secrete iron-coated sheaths that on occasion fossilize. Others may additionally bore into shells or rocks and shape microscopic canals in the shell; such microorganisms are referred to as endolithic, and their borings can be identified at some point of the Phanerozoic.
The earliest regarded fossils on the planet are putative fossilized microorganisms determined in hydrothermal vent precipitates, taken into consideration to be about three.42 billion years old.
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The four main elements of the human body are oxygen, hydrogen, carbon, and nitrogen.
Answer:
I think the central idea of the passage is that the family Otzi's father is common in Europe.
Explanation:
My justification for my answer is that his DNA kind of matched the one of the people living in the Neolithic Age. This shows that maybe he was a descendant of those people.
I think the first answer is wrong because people of the Neolithic Age were from the past and I don't think DNA existed by then.
And the think the second is wrong because his mother's family was just rare it wasn't complex.
Finally the last is wrong because the DNA wasn't so hard to test it was also easy to compare it because there were other samples to be compared with.
That leaves us with the last answer as correct.
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Most likely the resources in the area the were in before they moved were going down as the population rises.
Answer:
To ensure that the progress evaluation will be complete, the AT needs to go through history, observation, palpation, and special testing. The patient should be asked pertinent questions, such as, " What types of exercises have you done for the past 3 months?" and "What type of pain, if any, ar you still experiencing?" Obersation of the symmetry to the other knee and palpation of the injured structures should be done. Range of motion, muscle strength, joint stability, and neuromuscular control should also be assessed.
