Truuuueeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
I thought it was (d) but I might be wrong
Answer:
A. Compounds contain fixed ratios of different elements.
Explanation:
Water always has this 2:1 ratio of hydrogen to oxygen. Like water, all compounds consist of a fixed ratio of elements. It doesn't matter how much or how little of a compound there is. It always has the same composition.
1. observing
2. forming hypotheses
3. testing hypotheses
4. analyzing data
5. evaluating results
Hope it helped
Aminos acids are used to build proteins