A. Temperature 27C and a pH of 4 B. Temperature of 37C and pH of 6

C. Temperature of 40C and pH of 8

D. Temperature of 50C and a pH of 10

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

Describe two recent or ongoing space missions.

Variety of living organisms; includes genetic, species, and ecological types.