Hypothesis: An educated guess on the natural world possibilities
Theory: An explanation of the natural world aspect
Law: An aspect of how the natural world reacts under a specific circumstance
Hypotheses, theories, and laws all have natural world tests in common. Each of them are trying to provide the steps to guarantee a valid experimentation. You cannot have a valid experimentation without each of these. However, fact is also a need.
1)which is not a major factor resulting in pollution from increased economic activity in china?
D) more bycicles are being used for traveling purposes.
2) Economic trends in chinas Gross Domestic Product over a 50-Year period can be best described as (1point)
B)relatively stable with low levels of economic activity from the 1950's to the late 1990s.
C. Atmosphere - which is the one sphere that means "air" or "gasses". The other ones mean, Biosphere = "living", Lithosphere = "land", and Hydrosphere = "water"
I think its D. Get a second opinion im only a sophmore in highschool lol but i would pick that if i were u.