The Sun warms the atmosphere and drives convection currents because A. warm air is less dense, so it rises

B. The warm air is cools and makes rain

C. the cooler land pushes away warm air

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.

Two critical interventions to turn around the opioid crises are: