The lymph is moved through the body in its own vessels making a one-way journey from the interstitial spaces to the subclavian veins at the base of the neck. Since the lymphatic system does not have a heart to pump it, its upward movement depends on the motions of the muscle and joint pumps.
<span>Bipedalism is the adaptation which emerged during pre-australopiths so as to become one of the key distinguishing characteristics of our ancestors.
Bipedalism is known as a form of terrestrial locomotion whereby organisms moves by means of its two rear legs or limbs. By freeing their front legs, our ancestors had a benefit like allowing the use of carrying tools.
Walking upright helped the ancestors to be able to see the predators and the preys.</span>
Answer:
Carbohydrates contain lots of energy
Explanation:
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Answer:
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Explanation:
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Answer: the sun heats the earth through radiation
Explanation: