1What are the 2 major divisions of Biochemistry? O Inorganic and Covalent
O Organic and Nucleic
O Inorganic and lonic
O Organic and Inorganic

What neutral atom is isoelectronic to mn+4

Stage in which a typical star has completely stopped fusion

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.