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Setler [38]
2 years ago
15

Two pairs of arteries supply the brain. they are: ________.

Biology
1 answer:
Paha777 [63]2 years ago
5 0
The two arteries that support the brain are the vertebrals and internal carotids. Hope this helps!

Can u plz mark me as brainliest?
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Each isotope has a special name derived from Latin (protium, deuterium, and tritium). What structural feature do these names ref
Eduardwww [97]

An isotope of any element is the same, with a variation in the neutrons of the nucleus.

The mass number change but the atomic number doesn't.

In this case, protium, deuterium, and tritium are all hydrogen isotopes.

Protium is 1H or Hydrogen-1 is without neutrons.

Deuterium is 2H  or Hydrogen-2 has one neutron.

Tritium is 3H or Hydrogen-3 has two neutrons.

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3 years ago
What are the inputs of the light dependent reactions?.
bixtya [17]

Answer:

6 water molecules (and technically sunlight/energy)

Explanation:

The inputs of photosynthesis are water and carbon dioxide (and energy); water is used in the light-dependent reactions, and carbon dioxide is used in the light-independent.  The water has to be there to replace the lost electrons in the chlorophyll that leave the thylakoids after being excited by the solar energy.

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2 years ago
What are the different worm phylums? Describe the differences between the three and give examples for each.
Evgesh-ka [11]
The three main worm phyla are flatworms, roundworms, and segmented worms. Roundworms have a digestive tube that has two openings. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels. These are important steps in the evolutionary development of animals.
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2 years ago
Please help need this before 6:00pm
defon

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its past 6pm

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What is the ONLY organ located in the region (umbilical)?
Vitek1552 [10]

Answer:

small intestine

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Umbilical. The umbilical region contains the umbilicus (navel), and many parts of the small intestine, such as part of the duodenum, the jejunum, and the illeum. It also contains the transverse colon (the section between the ascending and descending colons) and the bottom portions of both the left and right kidney.

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