Explain what might have happened at the end of the archean to cause these orogenies to occur globally and synchronized.

Photosynthesis converts solar energy into what type of energy?

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

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.