What are the positive or negative effects on survival and reproduction of individuals as relating to their expression of a variable trait in a population?

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

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.