Select all the correct answers. What are three disadvantages of making and using plastic?

a. it pollutes the land and water
b. it requires cutting down trees from raw materials
c. it takes an incredibly long time to break down
d. it freely conducts heat and electricity
f. it isn't easy to recycle

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

The appropriate concentration for an iodine sanitizer is

Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20