Final answer:
The Sierra Madre is notable for being two extensive mountain ranges in Mexico, extensions of the US Sierra Nevada and Rocky Mountains, with the Sierra Madre Occidental reaching over 9,843 feet in height and the Sierra Madre Oriental running for 808 miles along the coast.
Step-by-step explanation:
The Sierra Madre is a notable mountain range because it consists of two major ranges that extend along Mexico's coastlines: the Sierra Madre Occidental and the Sierra Madre Oriental. These ranges are extensions of mountain ranges from the southwestern United States, with the Sierra Madre Occidental being an extension of the Sierra Nevada range and spanning approximately 3,107 miles along the west coast with peaks exceeding 9,843 feet. The Sierra Madre Oriental extends the Rocky Mountains and runs for 808 miles along the east coast. Both ranges are not only impressive in their size and height but also play significant roles in Mexico's geography, influencing climate patterns and housing diverse ecosystems.