The document describes several different ecosystem and landscape types based on climate: 1) Desert landscapes are characterized by a lack of water and vegetation, though some plants like cacti and animals like camels have adapted. Only nomadic peoples typically inhabit deserts. 2) Mediterranean landscapes have irregular river flows and a mix of trees like oak and pine as well as shrubs like lavender and thyme. Human activity has replaced some areas with agriculture, olive groves, and vineyards. 3) Polar landscapes are dominated by ice and snow and have very little vegetation, supporting only animals near the poles and tundra plants and animals like reindeer and foxes closer to temperate zones.