Which of the following functional groups is formed from the condensation of carboxylic acids??? a. acid anhydride
b. acid halide
c. amide
d. ester
e. ether

How have the greenhouse gasses increased from the year 2000 to 2018

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world