A scientist in Northern California is studying the tree rings of a very old redwood tree. He notices that the oldest tree rings
are very narrow. As the rings move away from the center, he observes 15 rings that get wider and wider. What can you determine about the climate during the 15-year period during which the tree rings grew wider?
The climate was warmer and wetter.
The climate was warmer and drier.
The climate was colder and drier.
The climate was colder and wette
Trees don’t grow well in wet climates, nor when they are cold. The wider the rings, the healthier the tree is. Since it was narrow and then wide, was bad climate and then good.
Earth's gravity would increase with the increase in Earth's mass. The driver hits a bump and the gravell falls out, so that the mass of the truck is one half as large after hitting the bump.
