1. Present simple tense: The answer uses present simple ("I notice," "I usually pick it up," "I care," "I think") to describe regular actions and opinions, which is appropriate for this context.
2. Conditional clause: "if there’s a bin nearby" is a first conditional clause, showing the ability to use conditional structures naturally.
3. Infinitive of purpose: "to follow" in "for others to follow" shows the use of infinitive to express purpose.