What time frame is considered rapid environmental change?

less than a decade

more than a century

less than a year

more than two generations

When organisms are classified ,they are given a two part name

Which experiment would most likely contain experimental bias ?

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters