Which of the following occurs in January when the earth is closest to the sun? A perihelion
An aphelion
A revolution
An ellipse

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking

The two tubes contain bromothymol blue. after 24 hours, what will the color of the water be in tube b? a. green (it won't change) b. yellow c. blue d. colorless (clear)

Which is abiotic? a. tree sap b. insect c. sunlight d. wood table