Which of the following best describes the Gaia hypothesis? olt claims that the earth, life on earth, and the environment are all rapidly changing in an out-of-control manner.
olt claims that the earth maintains a constant temperature due to the presence of the Sun.
olt claims that the searth's climate and success of its organisms depends entirely upon humans.
chese
it claims that the earth, life on earth, and the environment are self-regulating at a state comfortable for the organisms.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Which of the following units is not an official si unit