Answer:
mitochodrion.
Explanation:
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Answer: B
Explanation: Traits usually die off when they are unneeded by the organism, or if the trait causes harm to the organism's survival. Through natural selection, over time, the organisms with the best combination of traits for its survival will become the dominating species, and those with weaker traits may not survive long enough to pass off their traits to future offspring.
It's a ! cnidocytes help in defence and also in capturing prey ! so answer is A !!
Ribosomal subunits are manufactured by the nucleolus
