Which of the following describes the conversation of chemical energy to heat energy?
a: a chair sitting still
b: a leaf absorbing sunlight
c: a battery powering a cell phone
d: a rock hitting the ground

Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

Mitosis is a type of cell division that produces cells that are identical to the parent cell. meiosis is a different type of cell division that produces cells that carry have a genetic material of the parent cell. based on the information provided how do the purpose of mitosis and meiosis differ

Stage in which a typical star has completely stopped fusion