biosphere
give one biotic factors
animals/plants/bacteria
give three types of consumers
herbivores/carnivores/scavengers/decomposers /
detrivores
what are the 5 steps of the water cycle?
condensation,precipitation, run off,evaporation, transpiration
define population
is a group of organisms of one species that lives in the same place at the same time and can successfully reproduce
true/false commensalism is when one organism benefits and the other is harmed
false
true/false abiotic factors don't include any non living part of the environment
false
what is always the first trophic level?
primary producers: plants
what happens in lakes due to fertilizer?
when farmers put fertilizers on plants and that it rains the fertilizer goes in lakes and makes plants that are in the lake grow but it also makes algae grow. Algae progressively cover the surface of the lake, photosynthesis can no longer happen so plants and fishes die due to lack of oxygen.
why do population increase or decrease?
population increase when there's more births and immigration
population decrease when there's more deaths than births and emigration
give one method of restoration
wetland restoration,reforestation,bioremediation
heterotrophs must acquire energy from where?
from other organisms
how much energy is passed each time?
10%
explain how photosyntesis work
carbon dioxide+ water + light energy produce carbohydrates and oxygen
what is an ecological niche?
the way an organism occupies a position in an ecosystem , including abiotic and biotic factors
what is a way that alien species can come?
by ballast water
how does the autotrophs eat ?
they produce their own food
how is energy measured?
in joules
where is mostly energy lost?
lost due to heat
how does bottom-up population regulation work?
give one example of invasive species
round goby/sea lamprey/ Eurasian milfoy/ spiny tailed water flea/ purple loosestrife/ zebra mussel/ Eurasian ruffle/ rusty crayfish
what is biosphere?
consist of all the life on earth and parts of the earth where life exists
make a food chain
plant< rabbit<fox<lion
what is the law of conservation of Mass?
numbers of atoms are not created or destroyed
how can we identify carrying capacity on a graph?
by looking when the line become stable after increasing a lot
what is it called when we use living organisms to clean up contaminated areas
bioremediation