How did the environment change? (PLEASE ANSWER ASAP!! I WILL AWARD BRAINLIEST) (image below) 1. You cannot tell how the environment changed. With each generation, more guppies passed on the gene for small spots to their offspring.

2. The rocks became smaller. With each generation, more guppies with small spots survived long enough to pass on the gene for small spots to their offspring.

3. The rocks became smaller. Guppies with small spots are more likely to survive, so the guppies with large spots changed to have small spots.

4.The rocks became smaller. Guppies with small spots are more likely to survive, so both kinds of guppies passed on the gene for small spots to their offspring.