Question

a) Suggest why Emile used four tubes in his experiment, rather than two.

b)Describe three variables that Emile needed to keep the same in his experiment.

c) Write a conclusion that Emile can make from his results.
send the answers fast​

Answer 1

these materials is suitable to make a box to hide precious objects: wood, glass, or frosted

Answer 2

Answer:

When carbon dioxide release by respiration reacts with lime water which forms calcium carbonate that makes the water cloudy as CaCO

3

is insoluble in water.