G. com/wp/resources/tree-math english worksheets/sample worksheets. html... University of California Berkeley scientists confirmed that a cluster of fossilized
bones found in Silicon Valley are likely the remains of a mammoth. The giant
beast would have roamed the area between 10,000 and 40,000 years ago. A pair
of elephant-like tusks, a huge pelvic bone and the animal's rib cage were found
by an amateur naturalist who was walking a dog along a canal near San Jose's
Guadalupe River. It could be the remains of a Columbian mammoth, according
to paleontologists who expect to study the site.
What is the central idea of the above passage?
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B
Schools
Mammoth fossils have been found in the Silicone Valley.
Fossils are in California,
Mammoths roamed North America.
Mammoths are roaming the Silicone Valley in California,
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Standard: RI.8.2
Domain: Reading: Informational Text

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

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