The Rainforest

Biotic factors: living organisms in an environment

Bengal tiger            
Red eyed tree frog
spider monkey
boa constrictor


Bengal bamboo
strangler fig


abiotic factors: nonliving organisms in an environment

humid temperatures
pond water

Carrying capacity: largest # of individuals of one species that an environment can support

The bird population has to hide up in trees so predators can't kill them and most birds live in trees for shelter. People sometimes chop down a whole bunch of trees in the rainforest causing the birds to find a new shelter and sometimes getting eaten by predators

Resources:fresh fruits, lake water, sunlight, shelter

Limiting factors:things that prevent a population from growing any larger

Sunlight is a limiting abiotic factor. This is due to a very dense canopy, sunlight is blocked from the rainforest floor making underbrush growth sparse.

Soil Nutrients is also a limiting abiotic factor. Rainforest soil is very acidic and provides little nutrients, plants depend on the decomposition of large fallen trees.  

A parrot eating a worm if the soil is bad then the worms will die causing the parrots to not get enough food.

The soul is bad so the worms will die causing the parrots to starve.

producers, consumers , and decomposers


A plant that makes its own food. Grass is an example of a producer because it makes its own food through photosynthesis and give energy off to consumers.


Consumers are organisms that feed off of other organisms. A frog is an example of a consumer because it gets its energy from eating flies.


Organisms that feed on dead plants and animals. An example of a decomposer is fungi because it feeds on dead plants and makes new soil and nutrients for plants to use.

Producers are vital because they give most of their energy away from the sun to consumers.

Food webs are more realistic than food chains because they show more opportunities to show energy flow between organisms.

If i were to take out the anaconda population then the frog population will increase.

Energy pyramids

We use a pyramid because the organisms at the bottom have the most energy and when it keeps going up the energy is getting lower.

Producers are in the largest level because they have the most energy to be consumed.

The top predator is in the smallest level because it has the least amount of energy and doesnt need that much energy.

Formulas for photosynthesis

Water= H20

Carbon dioxide= Co2

Oxygen= O2

Glucose= C6H12O6

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

Needed for photosynthesis: Water, sunlight, carbon dioxide and glucose is produced after photosynthesis.

Photosynthesis takes place in chloroplasts which contain the chlorophyll.

The energy transformations are radiant energy from the sun which turns to chemical and chemical turns to mechanical which turns into thermal energy.

Tropisms: turning or bending movement of an organism toward or away from an external stimulus

Ex: Phototropism-when a from the rainforest grows in response to sunlight at the top of the canopy

Hydrotropism-when a water lily grows in response to water

More important, tropisms help a plant to survive in its particular habitat, making use of separate systems for detecting and responding to environmental stimuli.

the role of decomposers

Decomposers are vital for the rainforest because they give nutrients and new soil for plants to grow and there are a lot of plants in the rainforest. If there were no decomposers than there will be piles and piles of wastes lying around everywhere in nature.

Some examples of decomposers are mushrooms and velvet worms.


Adaptation is essential in order to to survive and move ahead in the world. The ability to adapt to people, situations and surroundings affords people a greater opportunity to get what they want and what they need. Without the ability to adapt, people and organisms may find themselves stuck in situations far longer than is necessarily and unable to reach their goals.

Some adaptations are

1. Bark
In drier, temperate deciduous forests a thick bark helps to limit moisture evaporation from the tree's trunk. Since this is not a concern in the high humidity of tropical rainforests, most trees have a thin, smooth bark. The smoothness of the bark may also make it difficult for other plants to grow on their surface.

2. Lianas
Lianas are climbing woody vines that drape rainforest trees. They have adapted to life in the rainforest by having their roots in the ground and climbing high into the tree canopy to reach available sunlight. Many lianas start life in the rainforest canopy and send roots down to the ground.

If an animal from the rainforest gets moved to the arctic tundra then it will have to adapt to the new surroundings and if they cant they will most likely die.

The vines are need to grow to sunlight to be able to grow bigger because there is not enough light at the bottom of the rainforest.

natural selection

Natural selection is the gradual process by which heritable biological traits become either more or less common in a population as a function of the effect of inherited traits on the differential reproductive success of organisms interacting with their environment.

It is the one process that is responsible for the evolution of adaptations of organisms to their environment.

An example is when a chameleon changes colors to blend in to its surroundings forever and changes into a different color when needed over a long period of time. The process occurred when a predator was trying to hunt for prey and the population increased because of the predator not being able to find the chameleon.

Comment Stream

2 years ago

I love the pictures, Jason!👍👍

2 years ago

I love it baby, absolutely perfect

2 years ago

@aspenchristenson Thx aspen.

2 years ago

@jimmiewatson weird comment but thx jimmy.

2 years ago

Trey😂........ Good job Jason

2 years ago
2 years ago

Check to see if you can format your biotic factors better to minimize the space. Also, abiotic factors are not organisms...organisms are living things.

2 years ago

not the best u should not add somany pics

2 years ago

nice pictures