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aleksandr82 [10.1K]
3 years ago
6

Which describes the role of the heart in the cardiovascular system?

Health
1 answer:
svet-max [94.6K]3 years ago
3 0
It pumps the blood through blood vessels
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Electrons have a... Negative charge inside the nucleus Positive charge inside the nucleus Negative charge outside the nucleus
lilavasa [31]

Answer:

negative charge outside the nucleus

Explanation:

electrons group together outside the nucleus of an atom to form the electron cloud. Have a nice day! :)

7 0
2 years ago
How does the virus get into a cell? What happens once the virus gets in? What would make it possible for the avian flu to be tra
Stella [2.4K]

Answer:

Avian influenza is an infectious disease of birds caused by type A strains of the influenza virus. In birds, the infection can manifest itself in various ways, from mild symptoms, which can go unnoticed, to a disease that quickly leads to death and can cause a serious epidemic.

Explanation:

A virus is a tiny infectious particle that can only reproduce when it infects a host cell. Viruses "take over" the cell and use its resources to make more viruses, basically by reprogramming it to make it a virus factory. Because they cannot reproduce on their own (without a host), viruses are not considered alive. Viruses also have no cells: they are very small, much smaller than the cells of living things; They are basically just packages of nucleic acid and proteins.

For the spread of bird flu to be transferred from human to human, the virus should mutate into a form that is more easily transmitted from person to person.

Because in 1918 the worst flu virus pandemic was recorded in history.

Viruses such as avian influenza are prone to generate pandemics, due to their rapid spread and the ability to mutate the virus.

3 0
2 years ago
when exersiceing in the cold, keeping your head coverd is important as up to 50% of your heat can be lost through your head true
Neporo4naja [7]
True since the majority of heat from your body exits from your head and feet.
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3 years ago
• What are the goals of Healthy People?
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Maintaining a healthy lifestyle, eating well, exercise
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Committed time includes time needed for all of the following EXCEPT:
MAVERICK [17]

Answer:

i think it's playing sports

Explanation:

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3 years ago
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