Describe a situation where bacteria would be desirable/undesirable

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro