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koban [17]
3 years ago
8

Which of the following human activities would be expected to be the biggest contributor to air pollution?

Biology
2 answers:
kifflom [539]3 years ago
8 0
A. Driving

Cars are a big source of air pollution. The smoke out of car mufflers are the main source of the pollution. This is why many car companies are starting to make more electrical cars because they release less exhaust fumes.


sergejj [24]3 years ago
4 0

The correct answer is (a) driving.

The pressence of undesirable substances in air is called as air pollution. There are many human activities that contribute to air pollution. The biggest contributor is driving. The pollutants that comes out of the car are carbon dioxide, carbon monoxide. They also release hydrocarbon and nitrogen oxides which when combines in sunlight becomes ozone. Air pollutants emitted by cars and other automobiles increases the level of harmful gases which to severe health problems such as heart disease, asthma, irritation in eyes.










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What is the mass of all the worker bees in the hive together? Write your answer in scientific notation.
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Answer:

4 × 10^0 kg or 4×E0 kg.

Explanation:

Before delving into or solving the Calculation, let us check one or two things about worker bees.

WHAT IS A WORKER BEE?.

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The WORKER BEES are female bees too, but the only difference between them and the queen bees is that they (worker bees) do not reproduce like the queen bees. They are saddled with the responsibility of looking for food and maintaining the hive temperature.

Now to the question, the mass of a bee= 1 × 10^-4 kg. And there are 4 × 10^4 bees in hive. Therefore, the mass of all the worker bees in the hive together = (1 × 10^-4) × (4×10^4).

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