Which of the following best describes this sentence? There were 20 flamingos at the zoo.

Group of answer choices

Qualitative observation

Quantitative observation

Qualitative inference

Quantitative inference

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of