A frog sitting at the edge of a water puddle. The mud and dirt surrounding the pond is labeled A, the frog is labeled B, and the water is labeled C. Fill in the blank with the correct sphere label. A: B: C:

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife