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bonufazy [111]
3 years ago
15

Please answer ASAP! I'll give you the brainiest. Why has the water pollution challenge occurred?

Geography
1 answer:
vlada-n [284]3 years ago
6 0

Answer:

because harmful substances often chemicals or microorganisms contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment.

Explanation:

Hope This Helps!!!

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Our current best estimate is that the western Grand Canyon in Arizona began to be excavated by riser erosion about 6 million yea
katovenus [111]

Answer:

0.267mm/yr

7.25 mm

Explanation:

Given the following:

Estimated time since erosion began = 6 million years

Greatest depth of canyon = about 1.6km

The mean rate of erosion in millimeter per year:

Mean rate = Depth of canyon / time

Depth of canyon in millimeter:

1 km = 1000000 mm

1.6km = (1.6 × 1000000) = 1,600,000 mm

Mean rate = 1,600,000mm/ 6,000,000 years

Mean rate = 0.26666 mm/yr

Mean rate = 0.267 mm/year

B.) If rate of erosion = 0.267mm/yr

Date of birth = 30 / 10 / 1992

Today's date = 5 / 9 / 2020

Date difference = 27 years 55 days

Total number of days = (27 *365) + 55 = 9,910 days

Rate of erosion per day = 0.267 / 365 = 0.0007315 mm / day

Change in depth from date of birth till today:

0.0007315 mm/day × 9,910 days

= 7.2492328 mm

= 7.25 mm deeper

3 0
3 years ago
Write 3.5% as a decimal
MAXImum [283]
Move the decimal over two spaces to the left
.035
3 0
3 years ago
Read 2 more answers
Since the fall of communism in the 1990s, Slovakia has built its tourist industry by developing which of the following attractio
Oliga [24]
It's all of the above.
3 0
3 years ago
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the principle of states that the physical, chemical, and biological processes at work shaping the earth today have also operated
Anna35 [415]

The principle of states that the physical, chemical, and biological processes at work shaping the earth today have also operated in the geologic past is uniformitarianism.

<h3>What is biological system?</h3>
  • A biological system is a complex network which connects several biologically relevant entities.
  • Biological organization spans several scales and are determined based different structures depending on what the system is.
  • Examples of biological systems at the macro scale are populations of organisms.
  • On the organ and tissue scale in mammals and other animals, examples include the circulatory system, the respiratory system, and the nervous system.
  • On the micro to the nanoscopic scale, examples of biological systems are cells, organelles, macromolecular complexes and regulatory pathways.
  • A biological system is not to be confused with a living system, such as a living organism.
<h3>What in nature is biological?</h3>
  • All of the branches of the natural sciences that focus on different facets of life's processes are included in the biological sciences.
  • The notion spans all species, from bacteria to animals and plants, and incorporates anatomy, physiology, cell biology, biochemistry, and biophysics.

Learn more about biological here:

brainly.com/question/27909220

#SPJ4

4 0
1 year ago
A monument stand on LEVEL ground. The angle of elevation to the top of the monument taken at a point 405 feet away is 32°.Find t
jekas [21]
O=height of monument

tan32= O/405
O=tan32/405
height of monument=0.0015 ft.

7 0
3 years ago
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