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Marat540 [252]
3 years ago
9

2. Which of the following might cause pollution?

Mathematics
2 answers:
Kryger [21]3 years ago
8 0

Answer:

All of them cause pollution

Step-by-step explanation:

  • Car exhaust: it causes air pollution due to the release of certain dangerous forms of carbon into the atmosphere.
  • Chemicals:this causes a wide range of effects as it can lead to air water and land pollution. Its effects ranges from release of harmful gases into the atmosphere to pollution of river to the contamination of soil
  • Oceans: this can be caused when water is not needed in a particle environment and this water can lead to the contamination of those materials in that environment as in the case of a chemical experiment that gets contaminated or becomes dangerous when exposed to moisture or the direct entry of ocean water into a habitat that doesn't need that much water
  • People: They can be see as the major cause as the control or affect what goes wrong in their environment. They have certain control on various factors that cause pollution.
Verdich [7]3 years ago
6 0

Answer: (a) car exhaust; (b) chemicals and (d) people

Step-by-step explanation:

Indeed, it all starts from people. They are the ones who use the cars and make the pollution happen. It is also people who use chemicals to pan and find gold, for example, polluting rivers.

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6 0
3 years ago
how do you solve this problem. there are approximately 2.1 million deaths per year in country A. Express this quantity as deaths
slamgirl [31]
Well... we know that... there are 365 days in a year, unless is a leap-year, but we'll use 365 anyway

and each day has 24hrs, each hr has 60 minutes

so. let us use those ratios

\bf 2.1million\iff 2.1E6\iff 2,100,000\qquad thus&#10;\\\\\\&#10;\cfrac{2100000\ deaths}{1\ year}\cdot \cfrac{1\ year}{365\ day}\cdot \cfrac{1\ day}{24\ hr}\cdot \cfrac{1\ hr}{60\ minute}

so.. multiply and simplify, cancelling out any like-units atop and bottom

notice, all we do, is use the ratios, in a way, that if we need one unit to be changed, we flip the ratio

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4 years ago
Read 2 more answers
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Answer:

Step-by-step explanation:

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You need the percentages to answer the question
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