Areas of Earth that are covered with copious amounts of water are part of this sphere?
Biosphere
Geosphere
Hydrosphere
Monosphere

Which of these conditions most likely produces an unstable isotope?

May someone me with these science questions

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next