Astronomers use the of stars to determine how hot they are and their to estimate how far away they are. a. brightness; size b. temperature; position c. size; temperature d. color; brightness

Which would not reduce the amount of green house gasses in the air

What are similarities and differences between refraction, reflection, diffraction and absorption?

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.