What causes tectonic plates to move slowly over time? A. Convection currents in the asthenosphere carry
them.
B. Ocean currents push them in different directions.
C. Winds blow steadily on them in different directions.
D. Volcanoes move them from north to south.

List four observations that indicate that a chemical reaction may be taking place

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?