Which object has the most thermal energy? O A. A 4 kg brick at 20°C
O B. A 4 kg brick at 25°C
O C. A 2 kg brick at 20°C
O D. A 2 kg brick at 25°C

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

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.

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?