What did isaac newton discover about the structure of earth?

Who's feet pairs can we see on Grey's Anatomy title screen? What gives smoke its color? How full should a funnel be filled with solution in a filtration procedure? If a patient has measles why would antibiotics not work? Is water an active or passive transport? What is the dependent variable for global warming? How many miles does 24290 klms convert to? What is the Blood-forming tissue housed inside spongy bone? What would cause cleanly cut circular holes to appear on the leaves of plants? How would the ionosphere affect weather? Methane cows produce? Is the burning of leaves or melting of butter a physical reaction? What is a ornimental water feature called? What produces oxygen on the planet? What is the average speed o f a meteor that is normal size? Why students fail in shorthand? What term means to allow some things into the membrane but not all things? What is a frayed nerve? How well does a 7cr17mov stainless steel knife blade hold an edge? If it is 8pm sunday et what time is it in ksa?