The answer is Sensory Neurons
Well, flowers give insects like bees and butterflies nectar. That's their food. In return, the insects spread the flower's pollen so that other plants like its type can be fertilized.
This is mutualism - a symbiotic relationship were two organisms benefit.
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Answer:
Mass
Explanation:
I'm not for sure but I think its Mass. Please let me know if that was right or wrong.