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Lana71 [14]
3 years ago
7

Compare the properties of the elements in groups 1, 2, 17, and 18

Biology
1 answer:
astraxan [27]3 years ago
7 0

Answer:

Son las características que tienen los elementos y que varían en forma secuencial por grupos y períodos. Algunas de esas propiedades son: radio atómico, potencial de ionización, electronegatividad, estructura electrónica, afinidad electrónica, valencia iónica, carácter metálico

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The eye is an organ.why?<br>Skin is an epithelial tissue.why?<br>​
Brilliant_brown [7]

Answer:

"The organs have blood vessels as well as the nerves in it, the organ is also present within the organ motif is also being executed in these organs. So as eye. Epithelial tissue helps in protection against the microbes so as skin having different layers."

Explanation:

Eye is an organ because, the organs have blood vessels as well as the nerves in it, the organ is also present within the organ motif is also being executed in these organs. Similarly, inside the eyeball there is an organ which is known as retina, with is connected with the neural and epithelial tissue which helps in detection of the light which enters into the eyeball.

Skin is an epithelial tissue because, epithelial tissue helps in protection against the microbes. Similarly skin is composed of different layers of epithelial tissue which is also supported by the layers of connective tissue, helps in protection of internal organs from damage as well as dehydration.

3 0
3 years ago
Why are the prefixes “mono” “di”, and “poly and the base “saccharide” good to use when describing the three types of carbohydrat
jolli1 [7]

Answer:

“Mono” denotes one, “di” denotes two, and “poly” denotes a large number. 

What is the significance of these words in defining the 

three forms of sugars? 

These terms are used because they depict how the 

molecule appears. 

The molecule's base unit is called a "saccharide."

Explanation:

-

7 0
3 years ago
What is the point at which the sun crosses the equator to make night and day the same length during the second time of the year?
Andru [333]
The point at which the sun crosses the <span>equator to make night and day the same length during the second time of the year is an equinox.</span>
7 0
3 years ago
Read 2 more answers
Which subatomic particle is positively charged?
EastWind [94]

Answer:

Proton

Explanation:

Neutron are neutral, ion I am not sure but are not positive, and electron are -.

3 0
3 years ago
Read 2 more answers
1. Why do we have so many satellites "looking<br> into the universe?
schepotkina [342]
To view space and the foreign objects scientist may find. Also for learning purposes because it financially cost a lot to send scientists to space for research. So for research purposes.
4 0
3 years ago
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