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Ahat [919]
3 years ago
9

One pesticide, called was popular for killing mosquitoes that

Biology
1 answer:
daser333 [38]3 years ago
8 0

Answer:

DDT (dichloro-diphenyl-trichloroethane) was developed as the first of the modern synthetic insecticides in the 1940s. It was initially used with great effect to combat malaria, typhus, and the other insect-borne human diseases among both military and civilian populations.

Explanation:

Brainliest please?

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Which of the following statements about forest fires and the atmosphere is true?
lesantik [10]

- Forest fires reduce the number of trees that remove carbon dioxide from the atmosphere.

8 0
3 years ago
Which of the following materials is not part of every chemical reaction?
Sladkaya [172]

Answer:

The correct answer is C. gases.

Chemical reaction is the process by which one or more substances are converted into different substance or substances.

The substances which undergo chemical reaction are called as reactants while the substances which are produced by the reaction are called as products. During chemical reaction, chemical bonds of substrates undergo breaking and formation process to form an entire new product which may have same or different physical and chemical properties as compared to substrates.

Energy is either used or released during the chemical reaction. When the energy is used, it is termed as endothermic reaction but when the energy is produced by the reaction, it is termed as exothermic reaction.

Lastly, gases may or may not participate in a chemical reaction.

6 0
3 years ago
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What would be the most direct result of a decrease in mice population?
Zarrin [17]

Answer:

I believe the answer is A. There would be a decreased number of snakes

Explanation:

4 0
3 years ago
Read 2 more answers
BIOLOGY HELP!!!!!
Vlad [161]

1. The correct answer is pH.

The activity of the enzymes might be affected by environmental changes such as change in pH. Each enzyme has the point when it is the most active and this value is known as the optimum pH. Extremely high or low pH values can lead to loss of enzyme activity and stability.

Phosphofructokinase is sensitive to acidity, meaning that it is inhibited by low pH levels.

2. The correct answer is temperature.

Enzyme is sensitive to the environmental conditions such as temperature changes.

Temperature is a factor that usually increases the rate of enzyme-catalyzed reactions by increasing the activity of enzymes. But, after reaching the optimum temperature, reaction rate abruptly declines. This happens because enzymes are deactivated or denatured at a certain temperature (above 40° C).


8 0
3 years ago
Which activity is most likely a result of a sudden, unexpected hangs in the environment? A. a dog mating to produce offspring B.
cupoosta [38]
It would probably be .D. Plankton populations decreasing.
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3 years ago
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