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Andrews [41]
2 years ago
13

Why does the exchange of gases between blood and body tissues not occur through the walls of arteries?

Biology
1 answer:
Novosadov [1.4K]2 years ago
5 0

Explanation:

Capillaries are thinnest blood vessels there are in human body or basically in any multicellular living creature. Capillaries are so thin, they are like a sheet made of cells. So there is nothing like capillaries which can introduce blood with the materials to be absorbed without letting both of them mix directly. Arteries and veins are too thick to carry out such exchange.

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Which of the following is part of a clade believed to have died out, leaving no descendants?
galina1969 [7]

Answer:

Paranthropus robustus

Explanation:

2.5 million years ago some autralopithecines were identified by dating fossils from South Africa, meaning they lived a good period of time. Of these, Australopithecus africanus is well known and is a little closer to our species. Other fossils found in excavations in both southern Africa and eastern Africa have been found to be of more recent specimens 2.5 to 2 million years ago. These specimens were classified as Paranthropus robustus and Paranthropus boisei. These australopithecine species became extinct and left no current descendants.

8 0
3 years ago
The diagram shows two solutions separated by a membrane. Water molecules can cross the
Tatiana [17]

Answer:

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Explanation:

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4 0
2 years ago
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gregori [183]

Answer:

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b.biosphere.

c.atmosphere

d.geosphere

e.hydrosphere

f.biosphere

4 0
2 years ago
What might be the consequence of malfunctions in any of the body systems?
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3 years ago
how does tourism and over hunting affect the populations of the Australian Freshwater Crocodile (Crocodylus Johnstoni) ???
DerKrebs [107]
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