Which of the following describes the energy transformation that takes place when a boy eats an apple and then lifts weights? a. chemical energy is converted to mechanical and heat energy. b. chemical energy is converted to mechanical energy. c. chemical energy is converted to heat energy. d. chemical energy is converted to mechanical and kinetic energy. reset submit

What is the density of the black hole

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature