An asteroid is falling toward planet Earth from space. It has a height of 100,000 km. As the asteroid falls closer to the Earth's surface, its energy decreases and its energy increases. A. chemical; heat B. gravitational potential; kinetic C. kinetic; gravitational potential D. heat; chemical

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

What must happen before a body cell can begin mitotic cell division

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.