2. If the unstable atoms in a rock have a half-life of 2 million years and the rock begins with 8 mg of unstable atoms, how many milligrams of unstable atoms will be found in the rock 4 million years
after its formation?

Which statements best describe monsoons? check all that apply. they force cool, moist air from oceans to rise. they are winds that blow in the opposite direction of a normal wind. they bring rain in the summer and drought in the winter they increase rainfall in south asia, africa, and australia. they influence precipitation as wind moves near a mountain.