The questions from this lot which could be tested in a scientific manner would be "what causes some people to be color-blind"
and
"what are the best shoes to wear when exercising"
Both of these questions can be tested in a scientific way through an experiment.
Answer:
helps break down food to give organisms energy
Explanation:
Answer:
Yes, it would be very time consuming and expensive though. Look up the biggest item printed. We can go beyond that if we make 3d printer big enough.
Explanation:
A mechanic invented by eli whitney that removes seeds from cotton much more more quickly and effectively than by hand.