There are two accepted forms for possessive singular nouns ending in "s". You can either put cactus' , or you can put cactus's.
(((((SAVE)))))) the resource in every possible way and I every possible place considering sustainability and environmental impact. ((((REUSE)))) increase recycling of materials and reuse the elements of the product. Hope this answers your question (:
True, because we still learn about sentences in 6th grade (from what i can remember).
It is C/3rd in row because thou meaning you, shalt meaning shall, and pangs meaning pain.