Earth's green house effects is directly related to the carbon cycle.
carbon is known as the building block of life and also a form of stored energy. When fossil fuels such as coal and oil products are burned for energy, carbon dioxide is released . Carbon compounds move in a cycle through plants and animals, the air, ocean and earth.
Carbon that is in the air is the one that contributes to the greenhouse effect. Activities of man especially the burning of fossil fuels for energy is thought to release a lot of carbon dioxide in the air significantly contributing to the greenhouse effect.
I would think B. Is correct
Okay I'm positive it is A, read this
A thematic map is also called a special-purpose, single-topic, or statistical map. A thematic map focuses on the spatial variability of a specific distribution or theme (such as population density or average annual income), whereas a reference map focuses on the location and names of features.
The answer is: the 1906 San Francisco earthquake.
From an examination of the displacement of the ground surface which accompanied the 1906 earthquake, Henry Fielding Reid, Professor of Geology at Johns Hopkins University, concluded that the earthquake must have involved an "elastic rebound" of previously stored elastic stress.
The elastic rebound theory is an explanation for how energy is spread during earthquakes. As rocks on opposite sides of a fault are subjected to force and shift, they accumulate energy and slowly deform until their internal strength is exceeded.