Writing Feedback /
Many believe that individuals can do little to improve the environment. There's nothing we can't do. [3]
Hi. As @Holt said, I believe it would have been better if you had outlined the reasons for your position at the end of the last sentence in the first paragraph as opposed to giving ambiguous indications such as "reasons under", leaving readers confused. I don't think readers, especially examiners, have the time and intertest to play a guessing game, that is, to figure out themselves what the reasons actually are. They want to know the general idea of your essay at the very first glance at it.
If I write the essay, I will write "I totally disagree because individuals, however powerless they seem, can play a major role in environmental protection
even through the simplest acts such as not littering"
Personally, I do not like your example "all of people throw trash to the sea in one day..." Perhaps you live by the sea, but there are a great many people who live in inner villages, towns and citys, and I don't think you example goes down well with them. In addition, domestic sewage and industrial easte are discharged at sea
everyday, not "in one day", mostly at the hands of companys such as chemical plants instead of individuals.
Why not use simpler and clearer examples? Such as not littering. If most of people put trash in the bin rather than throw it carelessly, the environment will be more pleasant. That is the demonstration of individuals' power.