<em><u>Relative dating involves the process of determining the age of an object in comparison to another without determining the absolute dating. It may be defined as a method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock. </u></em>
<em><u>Carbon-14 is a type of carbon that undergoes radioactive decay at a known rate, and thus may be used in relative dating.</u></em>
<em><u>The amount of carbon incorporated in an organisms (plants and animals) when its alive stops when an organism die and the amount of carbon-14 begins to decrease at death as it undergoes radioactive decay. This can be used to determine the age of fossils.</u></em>
During cellular respiration, glucose and oxygen are changed into energy and carbon dioxide. Therefore, carbon dioxide is released into the atmosphere during the process of cellular respiration.
In normal tap water, an egg will sink because it's density is greater than the density of water. But, when salt is added to the water, it's density becomes greater than the egg's density. The term used to describe this is "buoyancy."
Chordae tendinae is a connective tissue that used to prevent the heart valve to be flapped away. It like a string that connected into the valve and makes it look like a kite. Papillary muscle is the part that anchoring it to the heart wall.
