unit 7 Flashcards
(18 cards)
what is an ecosystem?
An ecosystem is an environment that supports life.
what makes an ecosystem?
it is made up of abiotic and biotic factors.
give three examples of abiotic factors.
soil,temperature and the water supply.
what are the biotic factors that affect an ecosystem?
*the food supply.
*number of predators and prey.
*diseases and parasites.
what is biosphere?
the surface of the earth where living things can survive
what is habitat?
the place where organisms can live.
give four examples of habitat.
woodland,rainforest,desert,aquatic.
what is an environment?
the surrounding of an organism in its environment.
what is ecology?
it is the study of how living things interact with each other and with there environment
What are the main land ecosystems?
tropical rain forest,desert,temperate woodland.
factors of tropical rainforest
*a lot of rain
*a lot of sun
*warm temperatures all year round
what factors of the desert?
*dry humid with very little water
*day time very hot
*night is very cold
*in cold deserts water is frozen
what are the factors of temperate woodland?
*temperate ecosystems look very different in summer and winter
*summer plenty of sunlight warmth and water
*winter cold and the days are short
what is the percentage of water on earth
71%
there are more _______ ecosystems than _________ ecosystems
ans1:aquatic
ans2:land
most of the ______is_____, filling the ______and _______.
1: water
2: salty
3: oceans
4: seas
were are coral reefs found?
found in warm,clean and relatively shallow seas.
______are reduced to _______ to prevent the loss of _______
1:leaves
2:spines
3:water
