Green House Effect is the Technique in Botanical science that is use in the garden to capture more light and decreases that amount of light that bounces back to the atmosphere. The light will be trapped inside a glass cage and be use by the plants in their photosynthesis. So if the earths will be affected by this technique, the gases from the atmosphere are mostly the reason that the light that is passes through it will not be the same that bounces back to the outer space. In a clearer way of explaining, the heat is trapped inside the earths atmosphere and may cause global warming inside of it.
I'm assuming it would be Population Density. My class never covered this subject greatly, but the definition is "Population density is a measurement of population per unit area or unit volume;" which sounds like what you are looking for.
Hope this helps!
-Payshence
Bar graphs show patterns in data with variables that change over time; Whereas pie charts, show data as parts out of a whole, (such as 100%).
Answer is A. Longer Estivation stinger it is prolong over the heat