3 years ago

What vestigial structures do embryos have?

1 answer:

4 0

Charles Darwin said there where rudimentary parts on the embryos.These included the muscles of the ear, wisdom teeth, the appendix, the tail bone, body hair, and the semilunar fold in the corner of the eye.

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Evaluate using identities( 3x+7) (3x +7)

mash [69]

Answer:

$9 {x}^{2} + 42x + 49$

Explanation:

$(3x + 7)(3x + 7)$

$= > {(3x + 7)}^{2}$

Using the algebric identity ${(a + b)}^{2} = {a}^{2} + {b + 2ab}^{2}$

So,

${(3x + 7)}^{2} = {(3x)}^{2} + {(7) }^{2} + 2 \times 3x \times 7$

$= 9 {x}^{2} + 42x + 49$

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3 years ago

Tape worms and lice are example of

Tanzania [10]

They are both examples of Parasites, because they are feeding of another organism while they are still alive

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3 years ago

4) What drug can be found in the Peyote plant?

denis-greek [22]

Answer:

LSD

Explanation:

LCD is a good kinda drug
It is used to increase or alter a person's intention and impression towards his surroundings.
It also increases the Liberty to increase own thoughts.

Option B

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2 years ago

Breathing is affected by stress because

JulijaS [17]

Stress hormones affect your respiratory and cardiovascular systems. During the stress response, you breathe faster in an effort to distribute oxygen and blood quickly to your body core.

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3 years ago

Devon's target heart rate zone is 140bpm—177bpm. Julian's target heart rate zone is 148bpm—181bpm. They stop running and take th

jekas [21]

Both of them should be in their THR zones.
173-20=153
153 is within 140-177 & 148-181

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3 years ago