Such information is valid when A. it is not biased.
There is no bias in science - the results are either correct or incorrect; personal opinions have nothing to do with that. B is incorrect because the point of experiments is that they can be repeated to achieve the same results. C and D are likewise incorrect as primary sources are important, and you can share the results with others if you want to.
Its 30 kg cause I got 30 kg dude.
Answer:
90/100%, 9/10%
Explanation:
These represent 9 of 10 parts.
Hope this answer helps you out.
Answer:
I think it would most likely be 2... but not so sureee