Need !
: science
which statement about relative motion is not true?

a. the plane appears to be moving across the sky relative to a person watching from the ground.
b. a seated passenger on a plane is motionless relative to the plane.
c. a plane appears motionless to a skydiver who jumps out of it.
d. flight attendant walking down the aisle is in motion relative to the plane.

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

What is the relation between concentration of reactants and the rate of chemical reaction?