--- title: Deserts, rainforests and grasslands — a lesson of Mova's school · trees and pragmatics description: «Deserts, rainforests and grasslands», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: A biome is a large region of the Earth with its own climate and its own kinds of plants and animals; which biome a place has depends mos --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [World](https://md.mova.elamur.ai/free/en/corpora/school/world/) / Deserts, rainforests and grasslands # Deserts, rainforests and grasslands Lesson 66 of the world course of Mova's primary school: 22 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/66-deserts-rainforests-grasslands/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/0/) — A biome is a large region of the Earth with its own climate and its own kinds of plants and animals; which biome a place has depends mostly on how warm it is and how much rain falls there. - [1](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/1/) — A desert gets less than about 250 millimetres of rain a year. - [2](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/2/) — Not all deserts are hot or sandy: most are rocky or stony, and Antarctica is the largest desert of all. - [3](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/3/) — Hot deserts are scorching by day but can be cold at night, because dry, clear air lets the heat escape into the sky. - [4](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/4/) — A tropical rainforest lies near the equator, is hot all year and gets heavy rain almost every day. - [5](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/5/) — It has more kinds of living things than any other land biome, arranged in layers: the dark forest floor, the understorey, the thick roof of leaves called the canopy, and a few giant trees poking above it. - [6](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/6/) — Its soil is surprisingly poor, because fallen leaves rot fast and the plants take the nutrients back at once. - [7](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/7/) — Grasslands get too little rain for forests but too much for deserts. - [8](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/8/) — The hot savanna of Africa, with scattered trees, feeds zebras, wildebeest and lions; the cooler steppes of Ukraine and Asia and the prairies of North America have very rich black soil, built from grass roots over thousands of years, and are now great farmlands for wheat. - [9](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/9/) — Grass survives grazing and fire because it grows from near the ground, not from its tips: when an antelope bites off the top, or a fire sweeps over, the grass grows again from its base. - [10](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/10/) — A biome is a large region with its own climate, plants and animals. - [11](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/11/) — A desert gets less than about 250 millimetres of rain a year. - [12](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/12/) — Antarctica is the largest desert on Earth; the Sahara is the largest hot desert. - [13](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/13/) — Most deserts are rocky or stony rather than covered in sand dunes. - [14](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/14/) — Hot deserts can be very cold at night because dry clear air lets heat escape. - [15](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/15/) — Tropical rainforests are hot and wet all year and lie near the equator. - [16](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/16/) — Rainforests have more kinds of plants and animals than any other land biome. - [17](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/17/) — The canopy is the thick roof of leaves and branches high in a rainforest. - [18](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/18/) — Rainforest soil is often poor, because nutrients are quickly taken back up by plants. - [19](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/19/) — Grasslands get too little rain for forests but more than deserts. - [20](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/20/) — The savanna is a hot grassland with scattered trees, as in much of Africa. - [21](https://md.mova.elamur.ai/free/en/corpora/school/world/66-deserts-rainforests-grasslands/21/) — The steppes of Ukraine have very fertile black soil called chernozem. - ← previous: [Glaciers, ice ages and polar lands](https://md.mova.elamur.ai/free/en/corpora/school/world/65-glaciers-ice-ages-polar-lands/) - next →: [Clouds, rain, snow and hail](https://md.mova.elamur.ai/free/en/corpora/school/world/67-clouds-rain-snow-hail/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/school/world/)