What consequences does fibrillation have for cardiac muscle?

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

What is any method of measuring the age of an object or event in years, such as using atomic half-life?