What occurred during the Cambrian explosion? How is this significant in terms of common ancestry?

1 answer:

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The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears

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In the 1800s, the Irish wolved the problem of feeding a growing population by planting specifically, they a r e

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The potato crop devastation occurred in Ireland for not using one single potato species.

Explanation:

Potato became the staple crop of 18th Century Ireland and was easy to grow in the soil of this place. Later, it became the most dependent crop of the people of Ireland which made its supply very demanding leading to the yielding of more than one species of potatoes.

This yielding reduced the variety in the genetics of potatoes that helped in preventing the disease that affect potatoes by making the Irish people susceptible to famine. The Phytopthora bacteria affected the potatoes of North America in the year 1840 and Ireland’s moist weather in that same year made the blight to thrive.

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1 or A

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What is the electrical charge of the nucleus of an atom that has 11 protons , 12 neutrons , and 11 electrons ?

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Answer:

The 11 positive protons cancel out the 11 negative electrons, and the overall charge of the atom is zero. So it neutral

Explanation:

I hope this helps!!

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Antigens are substances capable of mobilizing the ___________

krok68 [10]

Antigens are substances capable of mobilizing the IMMUNE SYSTEM

Your answer would be: IMMUNE SYSTEM

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