Scientists have studied the fossilized shells of prehistoric, single-celled marine organisms. some of these shells were thin, which indicates that the organisms lived in very warm ocean water. such evidence indicates that the climate during this time may have been a) moderate b) arctic. c) tropical. d) the same as it is today.

Yes,it is C.That is the correct answer! :)

electronic measurement tools display data on a screen after waiting for several minutes.

while some business owners prefer manual record keeping systems, most businesses use an electronic record keeping system - making it easier to capture information, generate reports and meet tax and legal reporting requirements.

explanation:

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.