Answer:
to match the mystery food sample to a definite
positive result (gelatin, oil, etc.)
to match the mystery food sample to a definite
negative result (water)
It can be from how they are feeling the germs keep building up
It allows things to go in and out of the cell. Plants have rigid cell walls which makes it harder for things to go in and out if the cell. Animal cells are softer so they can diffuse substances easier
It turns into oobleck which is very fun to play with. It has a solid property when pressure is put on it and it is a liquid when no pressure is on it as to why I am not very sure but I hope I helped a little bit!
B Gradually develops stiff outer cell wall for protection is the answer
