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aksik [14]
3 years ago
9

What are the four main parts of the circulatory system?

Biology
2 answers:
rewona [7]3 years ago
4 0
The heart, the blood vessels, lymphatic system (or defense system), and the blood are the four main parts of the circulatory system.

I hope this helps!!
Please make brainliest if you understood!!
Thank you!!
Anni [7]3 years ago
4 0
Heart, blood and blood vessels, veins, and capillaries

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Por qué en algunos países es de día mientras que en otros es de noche?
jek_recluse [69]
I'm not sure if you needed a translation or an answer but i'll give both:)

"Why is it that in some countries it is day while in others it is night"

because at different times of the day the sun hits different areas of the earth. I hope this helps!

porque en diferentes momentos del día el sol golpea diferentes áreas de la tierra. ¡Espero que esto ayude

8 0
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AveGali [126]

Answer:

B

Explanation:

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Yes????

Explanation:

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Alja [10]
The answer is the atoms of the reactants have combined to form a new substance. Every product of a chemical equation has to be a new substance. If their is no new substance then, a chemical change never occurred and there is no chemical equation. The new substance never has the same properties as the reactants. That's why they call it a "new" substance. Also, the atoms are the ones that combine. They are not mixed
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Explanation:

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