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kykrilka [37]
3 years ago
7

What does external stimulus mean??

Biology
2 answers:
alexandr1967 [171]3 years ago
5 0
They are changes to conditions outside the body that our senses detect
sp2606 [1]3 years ago
3 0
Something that incites to action or exertion or quickens action, feeling, thought
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Pollen , coal and stems  are evidences that plants existed in Antarctica.

Explanation:

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  • Pollens are reproductive units of Plant that suggest existence of plants in the Ice covered land.
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