Traditionally the unit was the kilo-calorie but commonly just referred to as calorie. today's SI unit is the Joule...
Filling of the heart and needing to pump the blood back out at an also increased rate
Answer: I think it's A: the DNA of all organisms contains the same four bases.
Homo sapiens means wise human being, it one of several species grouped into the genus Homo, but it is the only one that is not extinct. It is the specie where all human beings belong. They replaced Neanderthals during 30,000 BC. Scientists believe that Homo sapiens appeared in Africa between 150,000 and 200,000 years ago.