Answer:
idk just needs points
Explanation:
i need 20 words so sorry ig
Inelastic collision happens when two objects joined and move together after the collision
Complete Question
The complete question is shown on the first uploaded image
Answer:
The correct option is B
Explanation:
The number of alphabet is n= 4 (a , b , c , d )
Generally the total number of string of length 10 over the 4 alphabets is

Gnerally the number of string of length 10 that does not include b is
Generally the number of strings of length 10 over the 4 alphabets that have at least one alphabet b somewhere in the string is

=> 
The correct answer is B, widespread pollution. If you look closely, you can see that the other answers are not problems at all, but benefits! :)