A comet's tail results from the increased speed that a comet attains as it nears the Sun, leaving some particles behind because of the acceleration of the main mass of the comet. a. true
b. false

Based on their location in the atmosphere, the layers are able to have their own special characteristics. for example, most weather occurs in the troposphere. what occurs in each of the other layers?

Which of the following is not considered one of the four major oceans (1 point)

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called