Through the various biogeochemical cycles, such as the water cycle, the carbon cycle, and the nitrogen cycle, elements and molecules are recycled. energy, however, cannot be recycled. instead, energy in ecosystems must be continuously supplied by

What are the probable phenotypes of their offspring

Name the type of chemical that speeds up digestion

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