2 years ago

Which two kinds of organs help vertebrate animals take in oxygen and get rid of carbon dioxide? A)Gill B)Lung C)Stomach D)Heart

1 answer:

4 0

A and B is the answer

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Aleksandr [31]

Answer:D

Explanation:

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2 years ago

nika2105 [10]

The answer would be A

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2 years ago

Luba_88 [7]

Answer is B. Best way to check is make a square

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3 years ago

Taya2010 [7]

Answer:

The pH of a solution containing 0.1 mM H+ is 4

Explanation:

The pH of any solution is given by the following mathematical equation -

$pH = -log[H_{+}]\\$ ----------- Equation (A)

Where,

$H_{+}$ = the concentration of hydrogen ion in the solution.

Given

$H_{+}$

= $0.1mM\\=0.1 * 10^{-3}\\= 10^{-4}\\$

Substituting the given value in equation (A) , we get -

$pH = -log[10^{-4}]$

$= -(-4)\\= 4$

Hence, The pH of a solution containing 0.1 mM H+ is 4

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PtichkaEL [24]

Answer:

coordinated regulation of a group of genes that encode proteins with a common function.

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2 years ago