What characterizes an alpine biome

Explanation:

Alpine biome describes an ecosystem that doesn't contain trees due to its high altitude. These biomes are found in mountainous regions across the globe. Their elevation normally ranges between 10,000 feet (3,000 meters) and the area where a mountain's snow line begins.

i would say the answer is food.

hope this !

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.