Select the best dated evidence that humans have been on earth for over four million years from the choices provided. a. a fossil nicknamed lucy was found in east africa. b. a specimen nicknamed ardi was found in east africa. c. artifacts from the stone age were discovered in east africa. d. evidence from the last ice age was found in east africa.

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.