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slavikrds [6]
2 years ago
15

Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone. Which organ system do blo

od cells and blood vessels belong to? A. circulatory system B. nervous system C. respiratory system D. skeletal system ​
Biology
1 answer:
Marizza181 [45]2 years ago
4 0

Answer:

A. Circulatory system

Explanation:

Circulatory system consist of heart,blood cells&blood vessels

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Part B<br> What are the strengths and weaknesses of the cell model?
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Answer:

strengths:The cell model shows all the process involved, and it's easy to understand, even if a person isn't familiar with the process

weaknesses: it doesnt show organelle or rna

7 0
3 years ago
What factor limits the number of eclipses per year
labwork [276]

Answer:

"Option B. The tilt of the moon´s orbit around the earth " limits the number of eclipses per year

<u>Explanation</u>:

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5 0
3 years ago
हेटेरोसिस्ट से क्या आशयहै?<br>​
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Answer:

Give more detail please

Explanation:

5 0
3 years ago
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Water moves from an area of 80% water to an area of 50% water is this active or passive transport
gavmur [86]
Passive because the water flow gets weaker mark brainliest please and have a good day
4 0
3 years ago
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madam [21]

From the options, I would say it would be option B.

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