I can't breath Morty​

Land is to arable ; river is a, navigable b, shallow c, presumsor d, water

How. many question are on the aspire science test

You want to test the hypothesis that smoking cigarettes increases the risk of lung cancer. in your experiment, you take 100 people of various ages and genders for each of your groups. one group smokes. the other group does not smoke. the group that does not smoke is called the group