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dezoksy [38]
2 years ago
9

A population of insects is sprayed with a new insecticide. Most of the

Biology
1 answer:
zepelin [54]2 years ago
4 0

Answer: This shows that over time, some insects can become "pesticide-resistant" meaning that pesticides don't affect them anymore. And this only happens every few generations. Therefore, each generation is being naturally selected and accumulating variations that make them resist the chemicals. This shows that each cockroach's genes are changing to give them variation from the rest of the population.

I hope this helps!

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Page 7e) Mrs. karki deposited a sum of money 7aa in a bank at the rate of 5 90 per year Simple interest. T. She received an inte
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The principal money Mrs Karki deposited in the bank was

= Rs 1339

Simple interest (Si) received = Rs 4,740

Time (t)= 6 years

Rate (r)= 59%

Therefore the principal amount (p) =

p = \frac{si \times 100}{r \times t}

where,

p =  \frac{4740 \times 100}{59 \times 6}

p =  \frac{474000}{354}

p = 1339

Therefore, the principal money Mrs Karki deposited in the bank was = Rs 1339

Learn more about simple interest here:

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