Anoxygenic phototrophs
a. produce oxygen.
b. use water as a source of electrons.
c. use hydrogen sulfide or organic compounds as a
source of electrons.
d. use the same form of chlorophyll found in
terrestrial plants.

Type the correct answer in the box. spell all words correctly. what is the correct term for living the most sustainable life you can within your current circumstances? when your are being as sustainable as you can within your current lifestyle, you are said to be sustainability.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.