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quester [9]
3 years ago
14

Describe how home heating and cooling has changed over time, and how it has remained the same.

Biology
1 answer:
Delicious77 [7]3 years ago
5 0
Heating is still done largely by burning fuels, like it has been in the past, although people now have central heating to circulate the warm air throughout the house. Some people use electric heaters and people used to use cool water to cool their houses. Now people use electric air conditioners.
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Lelechka [254]

Answer:

C. Anywhere life is found.

Explanation:

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2 years ago
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Aliun [14]

Answer:

A. C4H8C4  - NOT

B. C12H12C4  - NOT

C. CóH1206  - yes

D. C4H2020 - NOT

Explanation:

Carbohydrates are one of macro molecules made up of carbon, hydrogen and oxygen. These are essential molecule as they provide nutrition and makes structural component in plants too.

The ration of carbon, hydrogen and oxygen is similar in almost every sugar or carbohydrate which is 1:2:1, one carbon molecule and one oxygen molecule per two molecule of hydrogen.

In choice A, and B have no oxygen molecule so they can not be carbohydrate, where as D have inappropriate ration in comparison to the carbohydrates.

Thus, the correct answer is :

A. C4H8C4  - NOT

B. C12H12C4  - NOT

C. CóH1206  - yes

D. C4H2020 - NOT

4 0
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xenn [34]
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