Answer:
This observation would be quantitative.
Explanation:
This is quantitive because it says how many of what there is.
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Answer:
D
Explanation:
"Plants are green. They live using sunlight, carbon dioxide, and nutrients, making their own food through the process of photosynthesis. In contrast, animals live by eating other organisms (plants, animals, bacteria, or even bits and pieces of dead organisms".
Yes, human error is valid to list as a source of error. No one can control if someone slips up slightly.
Hope this helps
