The answer is B. The lines of Latitude are about 69 miles apart. Each line of latitude is 1 degree of the angle of circumference of the earth, with parallel latitude lines lined up going East-West. Since the lines are stacked up north to south, your latitude describes your North/South position on the earth. Since these lines are parallel, their distance in generally constant.
Earth's atmosphere has a series of layers, each with its own specific traits. Moving upward from ground level, these layers are named the troposphere, stratosphere, mesosphere, thermosphere and exosphere. Hope this helped.
All vegetable life, and therefore animal life, is based on the approval of sunlight, as plants (the primary consumers) perform photosynthesis, which is the process by which solar energy is converted into chemical energy , in the form of sugars. In this way, animals that feed on plants absorb solar energy. The second way the Earth absorbs solar energy is through its seas and oceans, which tempers the warm water and creates the warm ocean currents that carry the heat all over the planet.
The beginning of the Precambrian<span> period starts with the formation of Earth about 4.5 billion years ago and ends at the first sign of complex life about 540 million years ago. Though the </span>Precambrian<span> Period is often referred to as a period, it's actually the only supereon, which means that it spans multiple eons. The Precambrian is known as the geologic era. The Precambrian is the 1st era. hope that helped</span>