The silurian period occurred
a. after the permian era.
b. during the mesozoic era.
c. during the hadean eon.
d. before the neogene era.

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: