<span>"C. one complete spin on its axis</span>" is the correct answer. One complete orbit around the sun by a planet would be referred to as a period of rotation. Periods describe one full movement.
Answer: A figure (or shape) that can be divided into more than one of the basic figures is said to be a composite figure (or shape). For example, figure ABCD is a composite figure as it consists of two basic figures. That is, a figure is formed by a rectangle and triangle as shown below.
Answer: Pangea at the time was very cold because as we know today, South America is hot. If they have the same glacial deposits, that means it must have been very cold at one point of Earth's history.
Answer: A. Increasingly crowded urban areas
Explanation: Think about it this way. If you heard about more products being made in a city that means what? More jobs! Many people moved to cities and then made the cities unsanitary and many diseases spread around such as hepatitis. Anyways the more jobs there was the more money people could make and the more people lived in big cities like New York.
