Adaptations Flashcards
What are 3 conditions that extremophiles can survive in?
> salt
> heat
> pressure
What do animals compete for?
> food
> territory
> mates
What are extremophiles?
> living things that avoid competition by living in extreme environments
What are the adaptations of Arctic foxes and polar bears?
> small ears with small surface area
> thick layer of fur
> white colour for camouflage
What are the adaptations of a killer whale?
> thick layer of blubber
> large volume but small surface area reduces heat loss
What are the adaptations of an elephant?
> large ears with high surface area
> large blood supply to ears to radiate even more heat,
What are the adaptations of a cactus?
> thick stem to store water
> leaves act as protection and have very low surface area for minimal water loss
> extensive roots near to surface to absorb maximum water and all water from rain
What are the non-living factors that affect the size of a population?
> nutrients
> rainfall
> pollution
What are the living factors that affect the size of a population?
> predators
> competition
> disease
What are 2 pollution indicators?
> Lichen - air pollution (partic. SO2)
- more variety means lower levels
> invertebrates
What is an advantage of using invertebrates to measure water pollution?
> cheap
And easy as not much equipment is needed.
What do plants compete for?
> light
water
space
nutrients
