Which is a compound?
nitrogen gas
carbon dioxide gas
oxygen gas
hydrogen gas

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Describe the two types of vascular tissue

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2