2 years ago

For an organism to belong to class mammalia,it should have

Biology

2 answers:

Crank2 years ago

5 0

explanation:d. mammary glands

Nataliya [291]2 years ago

3 0

Answer:

All the Mammalia have mammary glands.

Therefore, the answer is mammary glands.

Explanation:

I am sure that mammary glands are present in Mammalia.

I hope this helps ☺️ ❤️

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Is the gaseous state electrically negative or positive ??

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The answer for your question is positive.

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3 years ago

You measure the pH of your backyard soil and find it is 7. You measure the pH of your friend's backyard soil and find it is 4. H

olchik [2.2K]

Answer:

1000 times.

Explanation:

Hello,

In this case, since the pH is defined by:

$pH=-log([H^+])$

If we want to compute the concentration of hydrogen we must write:

$[H^+]=10^{-pH}$

Thus, for both the backyard soils we compute:

$[H^+]_{pH=7}=10^{-7}=1x10^{-7}M$

$[H^+]_{pH=4}=10^{-4}=1x10^{-4}M$

It means that:

$\frac{[H^+]_{pH=4}}{[H^+]_{pH=7}} =\frac{1x10^{-4}M}{1x10^{-7}M}\\ \\\frac{[H^+]_{pH=4}}{[H^+]_{pH=7}}=1000$

It means that the concentration of hydrogen at a pH of 4 is 1000 times greater than the concentration of hydrogen at a pH of 7.

Regards.

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olga2289 [7]

should be called Bilateral symmetry

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Many international nonprofit groups watch elections in other nations to make sure elections are fair and free. Which of the foll

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Likurg_2 [28]

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