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dlinn [17]
3 years ago
10

How does the addition of pesticides and chemicals into lakes and streams affect an ecosystem?

Social Studies
2 answers:
Setler [38]3 years ago
6 0

Answer:

The addition of pesticides and chemicals into the water of lakes and streams affects an ecosystem because it kills or weakens much of the fish population. Weakened fish are easy prey for predators, and predators that rely on fish for their food may find an insufficient supply. Another problem is that the water bugs or plant life that the fish feed on will increase in population, throwing off the balance of the ecosystem. Finally, algae and bacteria grow too quickly with the addition of chemical fertilizers.  This can cause dead zones, where there is not enough oxygen in the water for fish to survive.

Explanation:

almond37 [142]3 years ago
3 0

Answer:

The addition of pesticides and chemicals into the water of lakes and streams affects an ecosystem because it kills or weakens much of the fish population. Weakened fish are easy prey for predators, and predators that rely on fish for their food may find an insufficient supply. Another problem is that the water bugs or plant life that the fish feed on will increase in population, throwing off the balance of the ecosystem. Finally, algae and bacteria grow too quickly with the addition of chemical fertilizers.  This can cause dead zones, where there is not enough oxygen in the water for fish to survive.

sample answer

Explanation:

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If Mexico enters into an agreement with other countries to keep the exchange rate among their currencies fixed it is taking part
hram777 [196]

Answer:

Option C, a fixed​ exchange-rate system, is the right answer.

Explanation:

Another term for the Fixed Exchange Rate is the pegged exchange rate. Following this exchange rate management, the currency of a nation is tied to the value of another individual currency such as the dollar or a basket of money, for instance, euro or to gold.  The main aim of this rating system is to keep the value of a currency within a narrow band.

4 0
3 years ago
Explain the term "Substance Abuse"with relevant facts​
jeka94

Answer:

Definition-Substance abuse is the medical term used to describe a pattern of using a substance (drug) that causes significant problems or distress. This may be missing work or school, using the substance in dangerous situations, such as driving a car.

Explanation:

Relevant fact-Substance use and abuse dont simply affect how the abuser is thinking at the time – it changes the brain in a permanent way, both in structure and in the way those structures function.

The younger a person begins to abuse substances, the more likely they are to become addicted in the long term. This is in part because, as expected, adolescents have poorer decision-making capabilities.

Substance abuse can be prevented the vast majority of the time by establishing strong bonds with one’s family and neighborhood, excelling academically, and embarking on healthy friendships. Oftentimes, the turn to addictive substances comes from a lack of one of the above and the internal ’emptiness’ it causes.

4 0
3 years ago
Concentration of production makes most sense when:
Natalija [7]

Answer:

A. Trade barriers are low.

Explanation:

Concentration of production makes most sense when trade barriers are low.

Having low trade barriers means that the exchange between products is easier between countries. So whatever products are made in concentration, they can be traded between countries without too many restrictions and that indirectly helps the economy in growing their profits.

I hope the answer was helpful.

Thanks for asking.

6 0
3 years ago
Please hurry!
HACTEHA [7]

Answer: B not all people bought all the stocks and the people who were working in jobs didn't get payed fairly so some of them quite and went on strike. The people working in factories either were forced to work or they would have gotten killed by many ways like, the factory manufacturing or getting shot etc.

Explanation:

6 0
3 years ago
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Answer:

The answer is B, C and E

Explanation:

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