Answer:
Parallel structure. Notice the repetition of the phrase, "look to our..."
Explanation:
On is the only preposition in this sentence. A preposition shows location, such as, on, over, beside, etc.
Answer:
A chemical plant worker took a stand against pollution and its effect on wildlife.
The first-aider will be ready with a first aid kit and will be on guard in case of accidents or injuries. First aid means, the first action done on someone who is injured or not feeling well within the designated place. He/she must know some first aid treatments or methods, such as treating a cut or bruise, giving artificial ventilation and CPR, etc.