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motikmotik
4 years ago
9

The first line of defense involves which structure(s)?

Biology
2 answers:
Airida [17]4 years ago
7 0

Answer: B / Skin

Explanation:It's the ansewr

kifflom [539]4 years ago
6 0

Answer:

Skin

Explanation:

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neutron

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How do scientists think that the common rosefinch came from Asia to Hawaii
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Http://lsintspl3.wgbh.org/en-us/lesson/nved-il-evolab-m4/2
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