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Author Question: The oldest known hominid stone tools date to: a. 2.5 million years in age. b. 5 million years ... (Read 275 times) |
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.