who propounded the theory of use and disuse???

Answer: Jean-Baptiste Lamarck
Question: how many episodes are there in when calls the heart season 3?

Answer: 8
Answer this question: who composed the famous patriotic song sare jahan se acha??

Muhammad Iqbal
Q: when is the first smog check required in california?A: every two years
Input: who played zack in saved by the bell?

Output: Mark-Paul Harry Gosselaar
what brand of m4 does the military use???

Answer:
Colt Firearms