HURRY QUICK 28. An herbicide killed 99% of a weed population. Which of the following is the BEST biological explanation for why some weeds were able to survive? (1 point)
O Some individuals were able to evolve before the spraying.
Each individual occupied a different ecological niche and so some were unaffected.
Genetic variation in the population allowed some weeds to survive.
The spray caused some individuals to mutate, and they were able to survive and
reproduce.

Genetic variation in the population allowed some weeds to survive

Explanation:

Herbicides are substances that are used to destroy unwanted plants. Herbicides are also called weed killers. An herbicide killed 99% of a weed population.

Some weeds were not able to survive as genetic variation in the population allowed some weeds to survive.

Examples of contact herbicides are as follows:

1. Diclofop

2. Dinoseb

3. Diquat

4. Paraquat

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