Writing Feedback / Rising gas prices is an impressive and effective way to decrease the traffic and polluted problem [5]

I think you should add an example for each body paragraph. it should be detail and more realistic such as a survey, a story, a real example or personal example,...

Writing Feedback / IELTS WRITING; a recycling law is not a vital factor to change the public awareness of recycling [3]

I think your example like an explanation. An example should be more detail and realistic such as a story, a survey, a study or personal example....