Most short-period comets do not have randomly oriented orbits because

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

answer: question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

a and b sometimes have a positive value

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.