In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

[EX Q]: Question: If Earth's plate tectonics slowed down, Earth's convection would 
 Answer: decrease
[EX A]: Convection on early Earth was faster and so plate tectonics was faster.

[EX Q]: Question: Tina cools some oxygen gas. The oxygen particles will move 
 Answer: slower
[EX A]: If the gas is heated, the particles will move faster as they gain more energy.

[EX Q]: Question: When people were taxed heavily for smoking cigarettes the smoking level 
 Answer: decreased
[EX A]:
The carbon taxes encourage people to use less fossil fuel, which reduces carbon dioxide emissions.