A. The following statements are hypotheses:
1. Glucose may cause an increase in bacterial growth.
2. Increased glucose may lead to capsule formation in bacteria.
B. The following statements are observations:
1. The bacterial colony grown without glucose do not have capsules around their cells.
2. Bacteria growth in the glucose environment increase rapidly and then stopped after sometime.
Answer: CaCl2
Explanation: the combining power will cross each other giving 1 as the subscript of calcium and 2 as the subscript of chlorine.
The genes that survive and flourish in a species are the strong ones. Strong genes evolve into the next generation, while weaker ones die.