How much higher is 500 than 400 m? How much higher is 500 than -400 m?
What is the change in elevation from 8,500 m to 3,400 m?
What is the change in elevation between 8,500 m and -300 m?
How much higher is -200 m than 450 m?

a) t'(-3, 6) and v'(0, 3)  

step-by-step explanation:

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3