PLZZZ HELP THIS IS A RIDDLE PLZZ HELP

What are the seven economic and social goals?

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box