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bulgar [2K]
3 years ago
15

Why does water of salt gets salty?​

Biology
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

Salt in the ocean comes from rocks on land. The rain that falls on the land contains some dissolved carbon dioxide from the surrounding air. This causes the rainwater to be slightly acidic due to carbonic acid (which forms from carbon dioxide and water).

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The looping of dna around histone proteins occurs because of what
nadya68 [22]
<span> It compacts the DNA allowing a large amount of DNA to fit into the cell. </span>
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2 years ago
Are endocytosis and exocytosis examples of passive transport or active transport?
soldi70 [24.7K]

Answer:

Yes, they are both active transport processes.

Explanation:

Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell. Both endocytosis and exocytosis are active transport processes.

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3 years ago
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American vultures used to be classified in the same family as African vultures. Which discovery caused scientists to reclassify
Mashutka [201]

Answer:

DNA evidence revealed the American vultures share more recent ancestor with the Storks

Explanation:

The hooded vultures that is mostly found in the African continent have a close resemblance with the American vultures and were traditionally classified to belong to the Falcon family.

However, it was observed that the American vultures shared a similar behavior with Stork which is not common to the vulture found in Africa, including the hooded vulture. The Stork and the American vulture exhibit the behavior of urinating on their legs when being overheated. When the urine gets evaporated, it helps them to cool their body temperature.

This shared behavior between the storks and the American vultures led scientists into using molecular analysis in analyzing the DNA of the hooded vultures found in Africa, the American vultures, and the stork.

Evidence from the DNA analysis later revealed that the American vultures and the storks share a more common DNA sequences than African vultures and American vultures do.

5 0
2 years ago
A scientist wants to know wheter a particular cell is round or rectangular.How should the scientist observe the overall shape of
dezoksy [38]

Answer:

<em>The shape of a cell can easily be seen through a light microscope.</em>

Explanation:

A microscope can be defined as a device which is used to visualize things which are otherwise not visible to the naked eye. The shape of a cell can be seen even through a light microscope. For example, an animal cell can be seen to have a round shape under the light microscope, a plant cell will be seen rectangular under the light microscope.

Other microscopes such as the electron microscope can even show the organelles present inside the cell.

5 0
3 years ago
Which of the following explains why a probe will hybridize to a target gene but not to any unrelated genes
kipiarov [429]
ANSWER: C. Complementary base pairing occurs only between the probe and the target gene.
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3 years ago
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