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saveliy_v [14]
3 years ago
11

Why is runoff in rivers and the ocean such a serious problem?

Biology
2 answers:
scZoUnD [109]3 years ago
4 0

Answer:

Explanation:

The main danger resulting from ocean contamination from runoff is the pervasive impact upon the food chain. ... Rivers are ecosystems that many communities rely upon for food and drinking water. Contamination makes it dangerous to eat fish that contain PCBs, heavy metals, mercury or other chemicals.

musickatia [10]3 years ago
4 0

Answer:

The main danger resulting from ocean contamination from runoff is the pervasive impact upon the food chain. Chemical contaminants do not just poison or contaminate the flesh of fish and large sea creatures: but also smaller animals eaten by fish, and the plankton eaten by the smallest sea creatures.

Explanation:

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What happens to the amount of light as you go deeper into aquatic system
gavmur [86]

Light bends when it hits water so it can only travel so far. So the deeper you go the less light there will be.

Explanation:

The ocean is broken into three zones based on intensity and light level. The upper 200 meters (656 feet) of the ocean is called the euphotic, or "sunlight," zone. This zone includes the vast preponderance of commercial fisheries and is home to many preserved marine mammals and sea turtles.Only a small amount of light penetrates behind this depth.The zone between 200 meters (656 feet) and 1,000 meters (3,280 feet) is usually regarded to as the “Twilight” zone, but is authorized the dysphotic zone. In this zone, the intensity of light rapidly consumes as depth increases. Such a miniscule amount of light penetrates beyond a depth of 200 meters that photosynthesis is no eternal possible.The aphotic, or “midnight,” zone survives in depths below 1,000 meters (3,280 feet). Sunlight does not perceive to these depths and the zone is immersed in darkness.

3 0
3 years ago
Describe the main characteristics of chordates.<br> Please DESCRIBE! <br> thanks
egoroff_w [7]

Answer:

The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a tailgut.

Hope this helps

7 0
2 years ago
Read 2 more answers
After the energy crisis of the 1970’s and the OPEC oil embargo, the US _______.
Anastaziya [24]

The Americans resorted to energy and gas-saving measures to cope with the embargo and the high price of oil.  The competition posed by non-OPEC members also contributed to the drop in oil prices and this affected the Arab economy who also took up austerity approaches to address the matter.  The prices of oil later stabilized in the 1980s.

4 0
2 years ago
What process takes place when water or wind loses the force necessary to keep sediments suspended?
Scrat [10]
I would think deposition
4 0
3 years ago
To stop the flow of water into Cell X when placed in a beaker of water, a pressure of 5psi must be applied. For Cell Z, subjecte
netineya [11]

Answer:

Cell Z has the greatest solute concentration

Explanation:

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