What is the purpose of archaebacteria?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

Write the balanced chemical equation forphotosynthesis.