Starting from school, you bicycle 2 km north, then 6 km
east, then 2 km south.
a. how far did you cycle?
b. what is your final position compared to your school?
c. how far and in what direction must you travel to return
to school?

As a small change in a person's dna can cause a genetic disorder

Where can dna be found in a prokaryotic cell

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?