The half-life of cobalt 60 is 5.3 years. What fraction of a sample remains after 21.2 years?

A.

one half

B.

one quarter

C.

one eighth

D.

one sixteenth

Name the enlarged swelling at the end of a that is a sensory structure

How is observant used by scientists

What types of gametes will a woman with type ab blood produce?

Which set of data most likely represents a tornado? A 300 mph wind speed; 3 minute duration; 2 miles wide; 12 mile path on the ground B 30 mph wind speed; 3 minute duration; 2 miles wide; 12 mile path on the ground C 80F ground air temperature;

What are genes and their role.

The steps in which solar wind is formed

What extends from earth core to earths crust

Which enzyme works on fats? amylase lipase peptidase trypsin

What body systems are used to type on a computer?

Small organisms have smaller cells than large organisms true or false