Ineed asap ill give you brainlesst whoever answers first. what does weathering contribute to? a. formation of the earth's core b. changes in the appearance of the earth’s surface c. climate change d. the formation of rainwater

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

4. glenn andrews recently bought a motorcycle for $3,950. if he had to pay 6% sales tax on the bike, what was the total cost of the motorcycle?

Describe the process that was used in this lab to create magnesium oxide, specifically identifying the type of chemical reaction. explain why the product had a higher mass than the reactant, and how this relates to conservation of matter.