17 Nitrogen(I) oxide, N20, nitrogen(II) oxide, NO, and carbon monoxide, Co, are all non-metal oxides.
They do not react with acids or bases.
Which statement is correct?
A They are acidic oxides.
B They are amphoteric oxides.
C They are basic oxides.
D They are neutral oxides.
OUCLES 2019
0620/21/
MJ/19

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12

List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn