Many factors affect water quality
Sedimentation.
Runoff.
Erosion.
Dissolved oxygen.
pH.
Temperature.
Decayed organic materials.
Pesticides.
Solution:
The ability to fuse one's identity with that of another without fear of losing it characterizes what erikson called the psychosexual.
Thus this the required answer.
Answer: It retains and transmits important biological information.
Explanation:
Movement : kinesis
Behavior: It is sometimes called a roly-poly due to its ability to roll into ball when disturbed