The correct answer is boll weevil
Boll Weevils are a small beetle that feeds on grains, such as wheat and rice. There are several types of weevils. And it is "greatest enemy" for cotton because it can invade the pantry or a plantation and make an infestation occurs.
1) French and Indian war
2) Townshend act
3) Boston Massacre
Answer: 
Explanation:
Given
A Planet is moving at a rate of 3 cm/year
distance between planets is 1500 km
and 1 km=1000 m
1 m=100 cm
No. of years required to cover 1500 km=