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

1 answer:

6 0

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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All of the following are examples of destiny dependent limiting factors except

Triss [41]

Hurricanes are not an example of density dependent limiting factors!

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Which of the following brain structures is involved in regulating hunger, thirst, temperature, and sexual behavior?(A) Hypothala

scoray [572]

Answer: Option A.

The hypothalamus is the brain structure responsiblre for regulating thirst, hunger, temperature and sexual behaviour.

Explanation:

Hypothalamus is a part of brain structures located at the floor of the third ventricle below the thalamus and its control the autonomic system.

It controls hunger, thirst, temperature, fatigue, sleep and sexual behaviour . Hypothalamus secretes the anti diuretic hormones which increases the level of water absorbed into the blood by the kidneys and corticotropin releasing hormone which regulate immune system.

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4 years ago

The heart is classified as a

denis23 [38]

Answer:a mscle which controls the body

Explanation:

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3 years ago

if a number cube is tossed once which of these is the most likely outcome one, 3, a number greater than 1, or number less than 3

Naddik [55]

A greater more than 3 because in a cube there are 6 numbers 1,2,3,4,5,6
Then it is not equal to have 1 greater than a tree has four numbers and less than three has 2. So more likely, Greater than three.

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3 years ago

In biology lab, your class counts the number of people with different colors of hair and eyes. Your instructor says that these t

IRISSAK [1]

Answer: E. Polygenic

Explanation: The color of eyes and hair is due to quantity and accumulation of pigments such melanin. Melanin is synthesize by multiple enzymatic steps and every enzyme is codified by a different gene. That means polygenic inheritance, that several genes are implicated in determined the this trait and its difficult to trace since every gene has a sequence that can vary between families or human groups.

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3 years ago