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NikAS [45]
4 years ago
8

The agricultural practice of spraying insecticides leaves behind which pollutant in the soil? A. Chemical poison B. Excess nitro

gen C. Excess salt D. Acidic compounds
Chemistry
2 answers:
Hoochie [10]4 years ago
8 0
 Insecticides are <span> Chemical poisons.
</span><span>A. Chemical poison</span>
iren2701 [21]4 years ago
4 0

Answer:The correct answer is option A

Explanation:

The spraying of insecticides not only kills the insects harming the crops but also damages the fertility of the soil.

Development of new chemicals which are used as insecticides has polluted the soil with dangerous chemicals which are poisonous for living organism.

Extensive use of these chemicals has introduced these chemicals in the food chain and food web causing harm to living beings.

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Which of the following statements correctly relates mutations and survival rates of plants?
Tasya [4]
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3 0
4 years ago
Select the pair that consists of a base and its conjugate acid in that order. CO32−/CO22−
lana [24]

Answer: The pair that consists of a base and its conjugate acid in that order.NH_3/NH_4^+

Explanation:

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H_3PO_4\rightarrow H_PO_4{2^-}+2H^+

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NH_3+H^+\rightarrow NH_4^+

HCO_3^-\rightarrow CO_3^{2-}+H^+

NH_3  is gaining a proton, thus it is considered as a brønsted-lowry base and after gaining a proton, it formsNH_4^+  which is a conjugate acid.

3 0
3 years ago
A chemist has one solution that is 80% acid and another solution that is 30% acid. how much of the second (30%) solution is need
Aleksandr [31]

messed up oops !!!!!!!!!


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