One landform found in Mexico is volcanoes, also mesas and buttes and canyons like the Canon del Cobre in I believe the province of Durango up on the interior plateau so it definitely has a variety of landforms which reflect that it is on the circum-pacific ring of fire and also is partly quite arid.
I would personally go with an ice core because everything is frozen and just as it was all those years ago, therefore I'd feel like I had more and accurate data.<span />
The environment is dynamic whole understanding it imparts is quite essential as to reduce the uncertainties one does not need to increase the flow of general environment and specific forces.
This may create a reverse loop in the system and create hindrances in the environmental settings. As the environment is likely to create opportunities for the growth and development of man and his surroundings.
Because if one creates a positive change does not necessarily mean that the change may be positive such as a rise in temperature in summer or the reaction of the body etc. Taking the example of climate change that is the biggest system on earth is due to the man's impact on earth which has reacted to him.
