Organisms in their environment
Camels live in deserts that are hot and dry during the day, but cold at night. They are well adapted for survival in the desert.
Cacti are well adapted for survival in the desert. They have:
In addition, cacti have spines instead of leaves. These minimise the surface area and so reduce water loss by transpirationtranspiration: the loss of water from leaves by evaporation. It is much faster when stomata are open than when they are closed. The spines also protect the cacti from animals that might eat them.
Watch this clip to see how the saguaro cactus stores water in its stem.
Find out more about the saguaro cactus on BBC Nature.
Animals and plants may have specific features that adapt them to their environment. These include barbs and spines, poisons and warning colours that deter predators and herbivores. Some harmless species may even resemble a poisonous or dangerous species to increase their chances of survival.