The answer is D, photosynthesis and respiration.
—Evidence—
Oxygen is a byproduct of photosynthesis and, correspondingly, carbon dioxide the byproduct of respiration.
Oxygen gives our cells the ability to break down food in order to get the energy we need to survive. Although other animals may use different organs to breathe with, they all get oxygen into their bodies through respiration.
This startle reflex (aka moro reflex) is/was present in us as newborns.
It's triggered when there's an unexpected reaction. Example: Loud noise, sudden movement.
The baby will tighten his/her body, fling out arms, sort of like giving him/herself a hug. It happens because the baby is trying to protect itself from harm.
It normally leaves thanks to the mother's care, normally 6 weeks after the newborn is born.
<span> C) They make carbohydrates through the process of photosynthesis.
</span>Photosynthesis is a process wherein light energy is converted into chemical energy.
<span>Plants use the light energy coming from the sun and make food and other cellular organic compounds that will be used for certain types.
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<span>C Glucose is broken down in a cycle of reactions to form pyruvate
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