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vivado [14]
3 years ago
9

A scientific ________ describes a basic principle of nature that always occurs under certain conditions.

Biology
2 answers:
Oduvanchick [21]3 years ago
6 0
I believe it would be a scientific law

maw [93]3 years ago
5 0

Answer:

Law

Explanation:

A scientific law, is a statement that describes a principle of nature, they are also known as natural laws, and are generally always true.

Scientific laws are often mathematical formulas or expressions of natural events that occur, for example gravity.

Gravity is a natural event that occurs and it was put into a mathematical equation by Issac Newton

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How do ocean currents affect climate and aquatic life?
storchak [24]

Currents and Marine Life

Currents are powerful physical forces in the seas. They move water and heat around the globe, and help determine the chemical make-up of the water column. Currents also are a major factor in ocean ecosystems. Two types of current motion, upwelling and downwelling, strongly influence the distribution and abundance of marine life.

Upwelling
Currents play a huge role in marine productivity, through a process called upwelling. Sea life is concentrated in the sunlit waters near the surface, but most organic matter is far below, in deep waters and on the sea floor. When currents upwell, or flow up to the surface from beneath, they sweep vital nutrients back to where they're needed most.

Nowhere is the link between ocean circulation and productivity more evident than around Antarctica. There, strong currents pump nitrogen and phosphate up from the deep sea to fuel vast blooms of algae and other plants. These plankton are eaten by swarms of shrimp-like crustaceans called krill. Because of upwelling nutrients, krill are abundant enough to feed the largest animals on earth, baleen whales, as well as myriad penguins, seals, and seabirds. In fact, despite the harsh conditions, the biomass of Antarctic krill is thought to be greater than that of any other animal on Earth.

Downwelling
The importance of upwelling to surface organisms is matched by the need of sea bottom life for downwelling, or the sinking of surface water. Surface water can be forced downward by the pressure of the “pile” of water that forms where currents converge or wind drives the sea against a coastline. But for bottom dwellers, the sinking of water caused by density changes is especially noteworthy. The global conveyer belt takes oxygen-rich surface water and flushes it through the deep sea. Without this renewal, the dissolved oxygen in bottom sediments and waters would quickly be used up by the decay of organic matter. Anaerobic bacteria would take over decomposition, leading to a build up of hydrogen sulfide. Few benthic animals would survive such toxic conditions.

In the most extreme cases, a lack of downwelling may lead to mass extinctions. Paleontologists have suggested that 250 million years ago, deep circulation slowed nearly to a stop, and the ocean began to stagnate. Low oxygen, sulfide and methane-rich waters filled the ocean deeps and then spread onto the continental shelves, wiping out 95% of all marine species in the greatest extinction event in Earth history.

Instructions: In this activity, you will explore the differences between upwelling and downwelling. Study the graphics and photographs illustrating upwelling and downwelling, then answer the questions about each process. Maps of the world’s major surface and deep currents are included as resources to help you understand where and how upwelling and downwelling occur.

8 0
3 years ago
The location of continents has no affect on their climate true or false
NemiM [27]
It's absolutely false ! location of continent is the most important factor of its climate !
5 0
3 years ago
Read 2 more answers
Feeling dum.b rn so Umh… what does it mean for the moon to have a Revolution?
bija089 [108]
<h2>Yo WaSsuPp!!   ^v0!!</h2>

                            Feeling dum.b rn so Umh… what does it mean for the moon to have a Revolution?

<h3>         Lol no need to feel dum.b XD, everyone has trouble sometimes.</h3>

                          Revolution: the movement of an object in a circular or elliptical course around another or about an axis or center.

<h3>The moon having a revolution means that the moon is circling around the earth!!</h3><h3>                                          I apologize if i'm wrong// You're welcome if i' correct!</h3>

                       ((-Side Note-)): If you don't mind if this answer is correct can you give me brainliest? thank you ^v^!

<h3>                                   Have a great day ^v^"            </h3>
8 0
3 years ago
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Answer:

tgyyteVMz uoddlrbrukdrykdkdru

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Do organisms have feelings?
kakasveta [241]

Most human beings do

4 0
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