Biotic factors: Living factors in an ecosystem

Animals      Plants

Polar Bears                    Grass

Penguins                        Mosses

Eskimo                           Arctic willow

Fish                                Paspue Flower

Walrus                            Bearberry

Yeti                                 Purple Saxifrage

Abiotic factors: Non living factors an ecosystem

Polar bear's population are changing because the ice caps are melting,can't reach fish,and pollution.

Carrying capacity:the number of people, other living organisms, or crops that a region can support without environmental degradation



Sun light




Dry Air

Limiting factors:resources or environmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem

Bear/seal Bear/fish Bear/penguin Penguin/fish Yeti/Eskimos

less bears more seals

More bears less fish

Energy role:the transfer of energy from one alive thingy to another alive thingy

top carnivores get it's energy from a lower carnivore

lower carnivores get their energy from herbivores

herbivores get their energy from producers

producer gets energy from the sun

producers sort of starts the energy roles so they are very much needed

Food Webs/Chains

Food webs are more realistic because they have more than one line,animals eat more than one animals

if you were to remove a part a food web a lot of the food web would crash

Energy pyramid

2nd Polar bear

1st carnivore Penguin

herbivores Fish

producer Plankton

Energy pyramids are in the shape of a pyramids because it gets smaller closer to the top

The bottom is bigger has more energy and it is smaller higher up because it has less energy


6CO2 + 6H2O ------> C6H12O6 + 6O2

Sunlight energy

Where: CO2 = carbon dioxide
H2O = water
Light energy is required
C6H12O6 = glucose
O2 = oxygen

The one above is a

Tropism:the turning of all or part of an organism in a particular direction in response to an external stimulus.

Phototropism,Geotropism,and Thermotropism.

If a plant is put on a hill Tropism will make it grow up wards.

The role of Decomposers

Decomposers are very useful they support the ecosystem. With out them, basically everything would be DEAD.

Fungi,Worms,and Shroms


Adaptations are very important.Structural,Behavior,& Physiological.

This is a Polar Bears

This is a Plant

If you were to put a Polar bear in a jungle it would be unable to obtain food,then without food it would parish.

Natural Selection:the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.

Polar bears used to be a darker color but do to natural selection polar bear's fur got darker.

Comment Stream

2 years ago

Hahahahaha, you added yeti!😄

2 years ago

Oh and she didn't mean put a picture for coke in the Tackk, she meant an actual picture.

2 years ago

Looks great. See if you can find a more clear picture for your biotic factors. The one you have is a little blurry.

2 years ago

I recommend a better picture for a cover

2 years ago

I agree with this because the abiotic and biotic factors are correct.

2 years ago

I would recommend using a better picture of a polar bear

2 years ago

I love your pictures. Maybe you can be a little bit clearer on the effect of removing a part of the food web. And don't listen to Jason. I like that polar bear.

2 years ago

Nice diagrams!!