Me with the 4 of them i mark u as brainlist 20 points

1 -

x axis - types of sound

y axis - sound levels(decibels)  

2 -

whisper - 20 decibels

normal - 60 decibels

rock concert - 120 decibels

3 -

40 decibels more intense because a whisper is 20 decibels and normal talking is 60 decibels. So you take the two & subtract them 60 - 20 = 40. So that means it is 20 decibels more intense.

4 -

Pain threshold & a Jet plane

all answers true and false

explanation:

the animal that would be cutest if scaled down to the size of a cat? elephant