The answer to this question is b, effect.
Assuming that you're talking about two homozygous seeds (RR and rr), 75% of the seeds would be round, and the other 25% would be wrinkled.
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Answer:
Biotic or biological limiting factors are things like food, availability of mates, disease, and predators.
Explanation:
There is no image or choices so what exactly do you want us to answer.