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ale4655 [162]
3 years ago
11

How far from Earth is the star Proxima Centauri

Biology
1 answer:
Lunna [17]3 years ago
4 0
4.243 light years hope this helps
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White blood cells, part of the ___________ system, work closely with the ___________ system to protect us from infection and dis
tresset_1 [31]

Answer: The correct answer for the fill in the blank is A) Circulatory, immune.

Circulatory system also called cardiovascular system is a vast network of organs and vessels that allow the circulation of blood so as to transport nutrients, oxygen, other gases, and hormones to different parts of the body.

Blood contains different cells like white blood cells, red blood cells, platelets.

White blood cells ( also called leukocytes) work closely with immune system. They provide defense against pathogen ( disease causing organisms) through various ways ( like ingesting foreign material, producing antibodies to clear the antigens). By doing so, they protect us from infection and disease.

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4 years ago
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What would happen if there were no air on earth?
MrRa [10]
Humans would not be able to breathe and sound would not be able to travel also there would not be any life

~in which there would be no plants because humans breathe out carbon dioxide and if there are no humans then plants won’t be able to consume carbon dioxide
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3 years ago
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The radiometric date of a metamorphic rock most likely represents when the rock was _____.
nikitadnepr [17]

Answer:

"Heated during metamorphism" is the appropriate response.

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5 0
3 years ago
Enzymes and antibodies have different functions, but both are types of ____________.
Aneli [31]
Enzymes and antibodies are proteins. 

Amino acids are the building blocks of protein. It is a strong of linearity that can be thousands in length. Moreover, the formation of the amino acid and its system is influenced by its genes’ nucleotides arrangement.  <span> </span>
4 0
4 years ago
Specialized cells are formed when cells differentiate.<br> True?<br> False/
victus00 [196]
The answer is True.

When they differentiate, they become a specific cells with a specific function ( eg : brain cells, blood cells, liver cells, etc)

They each have a specific function which is why they're called specialized cells.

Hope this help
4 0
4 years ago
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