Organisms that comprise the greatest mass of living substance (biomass) in a terrestrial food chain
(a) decomposers (e. g., bacteria)
(b) producers (e. g., grasses)
(c) primary consumers (e. g., mice)
(d) secondary consumers (e. g., snakes)
(e) tertiary consumers (e. g., hawks)

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

9. wind power creates pollution. water air soil noise

Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3