as insects became exposed to pyrethroids, toxicity of pyrethroids weakened over time. which means that Most insects had the allele for pyrethroid resistance, but it remained masked. The allele for said pyrethroid resistance, evidently increased throughout the population.
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A plant cell placed in a hypotonic solution will not lyse because the plant cells tend not to bust..
Answer:
without the sun we probably be freezing that's why we need the son it keeps us warm and the sun gives use radiation energy which could help us power things.
Explanation:
False. Strontium 90 has a half life of only 30 years, and as millions of years pass, about the time fossils have been around, most if not all of any strontium would have decayed.
