Answer:
Resistance in insects develops when the same insecticide (or class of insecticides) is used against a pest population over and over again. Some insects will survive the same dose that kills their friends. Those that survive pass on that survival trait to their offspring.
Explanation:
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Answer:
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Explanation:
<span>While at the Galapagos islands, he noticed that animals on the different islands differed. For example, the giant tortoises on one island had saddle-shaped shells, while those on another island had dome-shaped shells. People who lived on the islands could even tell the island a turtle came from by its shell. This started Darwin thinking about the origin of the species. He wondered how each island came to have its own type of tortoise.
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