Question

Many scientists believe that Earth’s climate is getting warmer because of an increase in the amount of carbon dioxide in the air. Which of the following is a possible hypothesis made by a scientist studying this problem?

Answer 1

Glaciers melting is another way

Answer 2

A possible (and simplified) hypothesis would be:
If the amount of Carbon Dioxide increases in the atmosphere (Air as you called it) then the Earth's global temperature will increase.
A hypothesis is an educated guess put into an If ________ happens then __________ would happen.