Answer:
1To purify the air so we can breathe properly
2Sequester carbon for climate regulation
Answer:
1. Humans already knew how to make their own weapons
2. Humans already knew the concept of hunting to survive
Explanation:
I had a similar question and I got it right based on what O said above...hope this helps!
Regulates body temperature.
Moistens tissues in the eyes, nose and mouth.
Protects body organs and tissues.
Carries nutrients and oxygen to cells.
Lubricates joints.
Lessens burden the on kidneys and liver by flushing out waste products.
I believe its two <span>PGAL a0 molecules.</span>