Answer:
I think the first one is filtration
Explanation:
That is respirator mask or a filtration mask I guess and if the man breathes the sawdust he will practically get sick
I hope I helped this is all I know
No I believe thats the other way around as in photosynthesis. For say water falls on the leaf then the leaf seperates the water from oxygen to give us the oxygen then it starts over to become a cycle.Life
Answer:
chromosomes is the answer
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