On early earth, approximately 3.5 billion years ago: the first microbial mats (biofilm aggregations of prokaryotes) likely harvested energy through

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.

Coral have a symbiotic relationship with what in order to eat?