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Firlakuza [10]
3 years ago
10

What are the five main barriers to block pathogens? *?

Biology
1 answer:
tia_tia [17]3 years ago
7 0
There is external and internal so I'll list th external. The most important is skin then mucus, sweat or secretion, hair, nails and tears which are all part of the integumentary. Some internal defenses are white blood cells and T cells.
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If you were a frog, in which part of a lake would you most likely live?
ELEN [110]

Answer: B. littoral zone

Explanation: Their primary prey, insects, live or fly near the shallow and outside edges of ponds and lakes. There is also less predator fish at the edges of lakes and ponds.

4 0
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Vitek1552 [10]

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Which of the four locations would be the best and worst places to build a house? Rank the four locations and explain your reason
pychu [463]
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3 years ago
Describe an experiment to investigate the effect of training on subjects ability to run faster without respire get anaerobically
Zinaida [17]
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<span>1.) Take a stop-watch </span>
<span>2.) Take TWO or more runners </span>
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<span>5.) after finish line </span>
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<span>7.) check the concerntration </span>
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5 0
3 years ago
How does fossilized carbon get back into the atmosphere? (2 poic) living organisms need nitrogen to build proteins and nucleic a
Anton [14]
<span><u>How does fossilized carbon get back into the atmosphere?</u>
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<span><span><u>How does a plant get nitrogen from the soil?</u>
</span></span>Plants take nitrogen from the soil<span> by absorption through their roots as amino acids, nitrate ions, nitrite ions, or ammonium ions.</span><span>

</span>
8 0
3 years ago
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