Mutations (select all that apply) -are always harmful -can be beneficial -are changes in the dna -usually occur during dna replication -cause evolutionary change

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.