The circulation system works with the digestive as well as the respiratory <span>system.
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Answer:
Cuticles
Explanation:
;) (don't ask me why i know)
Answer:
At first, a fetus cannot distinguish between different voices.
A fetus begins responding to sound at between 22 and 24 weeks but can only hear low frequencies, such as a dog barking or a lawn mower.
As the auditory system and the brain continue to develop, this range increases. By late pregnancy, the fetus can hear voices and distinguish between
so at 22 weeks they're in the middle of the second trimester and can hear sounds but in the 3rd trimester can distinguish between voices
The left side of your heart pumps oxygenated blood to your body.
The right side pumps blood to the lungs to receive the oxygen and it goes out of the left side to distribute it throughout the body.
Hope this helps! If you have any questions, just ask!
