Answer:
1. Sucesión ecológica 1 (50%): Las siguientes imágenes corresponden a un proceso de sucesión
Explanation:
Trees, coral and animals called living fossils.
Photographs do not give an accurate picture of the region they show.
The Black Earth Region or the Central Chernozem Region in Russia takes its name from the type of soil that exists there which is considered "black earth" or "chernozem." This type of soil is very fertile and has made this region an agricultural center in Russia.
Answer:
A. Natural gas well
Explanation:
The hydrogen is a gas that can be found in numerous places on Earth, as it is found in all of the spheres. The water has it as one of the two chemicals that make it, it can be found in solid quantities in the atmosphere, as well as in the lithosphere. One place where this gas can not be found is a natural gas well. The natural gas is a fossil fuel, but it doesn't have hydrogen in its composition. This gas is mostly made out of methane, with smaller percentages of ethane, propane, butane, and pentane. If the situation is that the natural gas is almost entirely composed of methane, then it is considered to be a dry gas.