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Natasha_Volkova [10]
3 years ago
7

What are the two primary sources of energy for the earth

Biology
2 answers:
Nady [450]3 years ago
7 0
Crud oil and water are two primary sources of energy 
notsponge [240]3 years ago
6 0
What are the two primary sources of energy for the earth


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Is the nitrogen cycle the most important cycle?
wariber [46]

Answer:

Explanation:

The nitrogen cycle is an important cycle to the atmosphere. Nitrogen is an essential part of biological molecules such as proteins and nucleic acid, which makes nitrogen essential for all living organisms. Nitrogen makes up 78 percent of the atmosphere.

5 0
3 years ago
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The branch of anthropology that is concerned with discovering what makes human beings different from other living organisms and
Kaylis [27]
The correct answer is biological anthropology, or physical anthropology. 
It is centered around human beings only, with respect to their common or different features that they either share or don't share with their related non-human primates and other ancestors. It deals with human evolution, the study of their behavior, reproduction, etc.
4 0
4 years ago
What steps can someone take to prevent or treat H1N1 influenza?
Leto [7]
Hie there!

➡️If you have swine flu (H1N1 flu), you can give it to others.✔️

➡️Stay home for at least 24 hours after your fever is gone.✔️

➡️Wash your hands thoroughly and frequently. ✔️

➡️Use soap and water, or if they're unavailable, use an alcohol-based hand sanitizer.✔️
5 0
3 years ago
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Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with v
natita [175]

Answer:

The correct answer is d Bill"s plasma contain B antibodies

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As Bill"s plasma contain B antibodies that"s why his blood cells do not aggutinate when mixed with anti B serum.

6 0
3 years ago
A phenotypically normal couple has a colorblind klinefelter son (xxy). In which parent and at what meiotic stage must the non-di
ad-work [718]

Answer;

D. Meiosis ii of mother

Explanation;

-The non-disjunction occurs in the meiosis II of the mother. This non-disjunction occurs when the two sister chromatids X and X fails to separate during meiosis II and produces an egg having two X chromosomes.

-Klinefelter syndrome is a condition that occurs in males when they have an extra X chromosome. The syndrome is not inherited, but usually occurs as a random event during the formation of reproductive cells (eggs and sperm) that results in the presence of one extra copy of the X chromosome in each cell (47,XXY).

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3 years ago
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