If a person is a regular marijuana user, they may be ... A. under-performing at school.
B. over-achieving at school.
C. average at school.

3. dark matter

empty space could also be a simple vacuum

the right answer is 0.3 meters per second

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.