Please enable JavaScript.
Coggle requires JavaScript to display documents.
Paper 2 - Coggle Diagram
Paper 2
Deserts
- Sahara desert, arabian desert, southern africa desert
-
-
All deserts are very dry, with hardly any rainfall. 40 degrees to 50 degrees in daytime and drop to 0 degrees by night time.
-
-
-
desertification
-
-
-
-
-
sinking air not rising, air is being forced down which is very dry.
Cactus
small leaves - ensure that less water is lost from the plant by transpiration because the leaf has a smaller surface area.
Tap roots - long roots that reach deep under the ground to access water supplies. These tap roots are much longer and bigger than the plant which is visible at the surface.
Spines - spines lose less water than leaves so are very efficient in a hot climate. Spines also prevent animals from eating the plant.
Waxy skin - some leaves have a thick, waxy skin on their surface. This reduces water loss by transpiration.
Animals adaptations
camels - long eyelashes to keep sand out eyes. Double row of eyelashes. nostrill which they can close. humps to store fat. long legs. Thick fur for coldness at night. Camouflage and to help reduce heat. their poo can be used again. Wide feet so they don't sink into the sand.
Arabian death scorpion - only comes out at night time, doesn't drink but absorbs moisture from insects it eats. Has an outside skelton so can't be crushed. Helps reduce water loss. Can slow it's metabolism so doesn't get hungry and only eat 1-2 insects a year!
Fennec fox - big paws so it doesn't sink into the sand. Hunts from dusk until dawn.
sand colored fur provides camouflage from predators. Nose is small to reduce moisture loss.
-
-
-