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The reason give you a 2.25 for the grammar is not because there are a lot of mistakes, but because it is simple. No passive voice, adjective clauses, noun clauses...
about 1 year ago
According to the professor, (pause) in Alaska
The conclusion would sound clearer and more complex like this:
Exposure to reduced sunlight causes reduced amounts of seratonin, which makes people sad, and increased amounts of melatonin, which makes people SLEEPY.
Make sure you do the response in under 1:00
Topic Dev. 3.3
Delivery 2.5 (low fluency)
Total 2.68| 19
Better! Good job!