The answer is the anther because an ovule and an ovary are female reproduction parts and a pollen grain does not produce sperm nor is it hard.
Answer:
I belive the answer would be D.
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Answer:
The depth at which Drew found the algae
Explanation:
The dependent variable was the depth at which he found the algae, because that is what he measured on each day.
The independent variable was the sky conditions, since that changed from clear to cloudy, which impacted the dependent variable/the depth of the algae.
Biotic would mean living so fish and sea plants
