1. Julio and Karina were driving up a mountain when they noticed several changes. At the lowest elevation (sea level), they saw green vegetation, many birds, and small mammals. At the highest elevation, they saw bare rock, very little vegetation, and few birds. Which biomes did your classmates most likely pass through while driving from the lowest elevation to the highest elevation of this mountain?
A. Grassland tundra coniferous forest
B. Coniferous forest tundra temperate deciduous forest
C. Tundra temperate deciduous forest coniferous forest
D. Temperate deciduous forest coniferous forest tundra