what describes the rate of a nuclear decay reaction ?

a) the reaction is fixed but it can be altered by extreme temperatures

b) reaction rate can be affected by the amount of reactant remaining

c) reaction rate can be affected by temperature and pressure

d) reaction rate is fixed so it cannot be increased or decreased

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

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o