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 patriots had the advantage of being on their home land which the british didn't have, they had to be sent from england on ships. A disadvantage, however, would be that the british were better trained and had more weapons. Another advantage is the patriots had the more fighting spirit than the british, they had something to fight for, freedom. Another disadvantage is that the british had a better standing army, once some soldiers died, more came om the way.
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Answer:
Rate at which velocity changes with time.
Explanation:
Answer: In the mid 1800s, there was a lot of slavery in southern United States. Many Black people from United States escaped their masters and headed to Canada. They settled all over the country because they wanted to escape slavery. Moving to Canada was possible because of the Underground Railroad. European immigrants were the best settlers for the challenging Prairies, because of their familiarity with agriculture, rural lifestyles, and harsh climates. Economic and social situations in Europe were increasingly challenging in the mid to late 1800s.
Answer:
Of the the main causes of air pollution is over population.
Explanation:
In order to sustain more people, we have to produce more food and other things to sustain life. All the manufacturing leads to the burning of fossil fuels.
