PAPER 1: Living with the physical environment SECTION B: The living world KEY IDEA: Hot Deserts 1

Temp: 25- 35 (hot as 50 degrees!) I can describe the physical characteristics of a hot desert. (Climate/ Distribution/ Plants/ Animals/ Soil) Temp: 25- 35 (hot as 50 degrees!) Precipitation: Less than 250mm of rain Soil: Lack of water 1 metre Calcium Distribution: On tropic Cancer/ Capricorn between 20 and 30 degrees

Desert Bloom (spread seeds) I can describe how plants and animals adapt to the physical conditions. Plants (Flora) Cacti Desert Bloom (spread seeds) Lichens/ moss on rocks

Scorpion: 1 or 2 bugs a year I can describe how plants and animals adapt to the physical conditions. Fauna (Animals) Scorpion: 1 or 2 bugs a year Camel: Humps store fat/ eyelashes/ large feet Kangaroo: Female hormone release after rain/ babies survive Desert Fox: Light fur/ fur on paws/ large ears

Producer SECTION B: The Living World: Hot Deserts LO2: Food Webs/ Working together Hawk Roadrunner Coyote Rattlesnake Secondary Consumer Kangaroo Rat Grasshopper Scorpion Primary Consumer Grass Cactus Producer Sun

Hot desert: Low biodiversity as too hot and dry I can describe the issues related to biodiversity (how bio diverse the deserts are and how they rely on each other) Group Number of species Mammals 56 Birds 400 Reptiles 36 Plants 1,700 Mosses 60 Lichens 195 Hot desert: Low biodiversity as too hot and dry Rainforest: High biodiversity as hot and wet makes perfect growing conditions

Tourism: Coachella Festival/ Las Vegas Gambling/ Palm Springs Spas I can state the development opportunities in hot desert environments: mineral extraction, energy, farming, tourism Tourism: Coachella Festival/ Las Vegas Gambling/ Palm Springs Spas Energy: Oil mining/ wind turbines Farming: Almonds

I can state the challenges of developing hot desert environments: extreme temperatures, water supply, and inaccessibility. 50 degree heat/ heat stroke/ dried up rivers/ lonely roads dangerous to break down/ over abstraction/ low carry capacity

Land becomes unproductive as soil is lost and sand spreads. I can describe the causes of desertification – climate change, population growth, removal of fuel wood, overgrazing, over-cultivation and soil erosion. Desertification: Land becomes unproductive as soil is lost and sand spreads. Population growth means more farming and fuel wood is collected Over cultivation and over grazing means vegetation dies and not roots to hold in soil so sand can blow over Less rainfall – less vegetation – so soil can blow away and sand replace it

1. Bunds (Land Management) I can describe strategies used to reduce the risk of desertification – water and soil management, tree planting and use of appropriate technology. 1. Bunds (Land Management) A rock wall keeps in water/ nutrients and soil so the vegetation can keep growing and sand not spread 2. Tree Planting (Land Management) Great Green Wall across Africa – plants keep soil and trees help rainfall increase so vegetation keeps a barrier so sand can not spread 3. Stoves (Appropriate Technology) Stoves burn more efficiently so need less fuel wood