There are some general recommendations in your essay but you must be more [specific].
Two [similar] types of insects live in the same ecosystem, alike in appearance and feeding habits.
“Part of my research [involved] travelling to Latin America’?
In the early 19″ century there were several [major] earthquakes in the region.
The first British colonies in the US were [established] in the 17″ century.
The first step after a natural disaster is to ensure water is [available].
Many medicines are [derived] from plants and trees.
The end of 2008 was a time of serious [economic] disaster, with many banks and companies going bankrupt.
Although the company claimed to be concerned about the environment, its actions were not [consistent] with its words.
‘If you want to gain promotion in my industry, you are [required] to speak at least one other language well’
Whether it is [legal] to download certain Internet content remains a grey area.
It was [significant] that the increase in disease amongst the local community began soon after the opening of the chemical factory.