All living organisms are classified into one of three domains: bacteria, archaea, and eukarya. compare and contrast the domains bacteria and archaea. how are they alike? how are they different?

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?

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.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.