Well, It could be both A and C because the waste is turned into plant matter. I would say C is more likely the answer.
Answer:
Abstinence
Explanation:
Abstinence is the choice not to have sex. This method is 100% effective in preventing pregnancy and infection.
But, it's kinda like not having sex until after marriage.
They could make a matrial that wolnt rust, and that will not wear down/ break
Answer:physiological addiction is using a drug repeatedly until you become very dependent on it, that your body cannot function without it.
Psychological addiction is becoming mentally dependent on substances or behaviours displayed as a result of addiction.
Explanation:
In Physiological addiction the person becomes too dependent on the substance that the cells of the body can't function without the substance they have been accustomed to.
Psychological addiction in a nutshell is having emotional or mental attachment to a substance