The Arctic

Biotic factors: (Things that are alive or were once alive)  walrus, penguin, polar bear, wolf, seals, and caribou.

Abiotic factors: (Things that are not alive) freeing climate, snow, glaciers, water, and rocks.

Plants: dwarf shrubs, mosses, and lichens.

Carrying Capacity

Carrying capacity is the largest number of individuals of a species that an environment can support.

This includes Food,Water,Shelter, and space.

The walrus population would change if space was very little. Walruses travel in large herds and need space to roam.

Limiting Factors

Limiting factors are any factor or condition that limits the growth of a population in an ecosystem.

In the arctic, some limiting factors include extreme temperatures, and food shortage.

For example, natural predator and prey are Polar bear and fish. With a limited factor like extreme tempurature, it can cause animals to move slowly, and with higher temperatures causing ice to melt, when polar bears stand on the ice looking for fish, the ice is prone to melting, causing the polar bear to lose focus or even drown.

Energy Roles

Some animals in my ecosystem are moss, fish, penguins, and polar bears.

Fish eat the sea moss, then the Penguins eat the fish, then the seals eat the Penguins. The deal will gain all the energy.

The producer, (moss) is vital to my ecosystem because it transfers light energy into chemical energy for consumers.

Food Chains and food webs

Food webs webs are more realistic because they provide more detail for the series of food webs. They also give a better variety of transferring food and energy.

If I removed one population from the food web, then it could create a chain reaction and make a population go extinct or overpopulate.

Trophic levels and energy pyramids

A pyramid is necessary instead of anything else because it shows an easy way to show the transfer of energy from one trophic level to another.

Producers are at the bottom because they get their energy directly from the main source instead of through another organism. As you move up, the energy level decreases.


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

Sunlight energy

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

The necessary things for photosynthesis are carbon dioxide, water, and light.

The chloroplast is the place that photosynthesis takes place. It is radiant energy from the sun, to chemical energy for the plant.


Tropisms- The turning of all or part of an organism in a certain direction in response to an external stimulus.

An example of a tropism in the arctic could be a thermotropism, growth toward or away from heat.

Thermotropisms help the plants in the Arctic by directing the plant to a heat source in the freezing arctic.

Decomposers are vital to the arctic because they break down dead organisms. Without decomposers, the arctic would have dead frozen organisms everywhere!

The role of decomposers

Scientists have identified 4,350 different species of decomposers in the Arctic. However, not all of them are meant to break down things. Also, with fungi, you might imagine mushrooms, but mushrooms are relatively delicate and don’t do well in the Arctic cold. For that reason, most fungi are found in filaments and mats underneath the soil. The filaments grow into a food source and then use enzymes to break it down-again, very slowly. Arctic Foxes and birds are decomposers as well, eating the remains and scavenging whatever food they can find.


Adaptations are important because they help the organism survive. They help them survive by helping the animal adapt to their surrounding. An adaptation in the arctic is the arctic foxes fur. In the cold winter, it's white, blending in with the white snow to avoid being detected while hunting. Another adaptation is the caribous coat of fur. The hairs are hollow, keeping it warm.

An adaptation an organism needs is a way of warmth through a fur coat, or knowledge to find a place to keep warm.

If an arctic fox was placed in another environment other than the arctic, it would not blend in, making it hard to hunt and easy to be hunted.

Natural selection

Natural selection is a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment. It's important, because lots of animals would die without it, and that balances populations and such.

An animal that was naturally selected in the arctic is the Arctic fox. You can tell just by its name that it can survive well!

The arctic foxs thick fur and short muzzle adapted over the generations helps it conserve heat and survive. This helped the population increase, because thanks to natural selection, the arctic fox was able to easily survive and reproduce.

Comment Stream

2 years ago

Missing a lot

2 years ago

I am aware haha I am not finished

2 years ago

You should have already done steps 1 and 2. You need to get caught up ASAP! Also, you only need one headline at the beginning...the name of the ecosystem.

2 years ago

you didnt finish 3&4

2 years ago

Good info

2 years ago

Nice format!

2 years ago

it looks great just add some style

2 years ago

Thank you Sahar!