biotic factors

plants: seaweed, kelp, red algae, coral

animals: fish, sharks, whales, octopus, dolphin, squids, turtle

abiotic factors


sunlight, water tides, soil type, warm temperature, rocks

carrying capacity

The maximum number of organisms of a particular species that can be supported indefinately in a given environment

My population changes overtime by predators, no food, no space, and no shelter (my animals need water to live an  breathe). By not having food they can starve to death. With no shelter, they cant hide from predators, so there predators will eat them. My population can also change by reproducing.

limiting factors

A factor that limits the growth of a population in an ecosystem. Examples: food, light, weather, diseases, etc...              

Sharks are the predators for many fish in the sea. The sharks will just swallow them whole. Another example is eels, fish can hide from eels in their shelter, the anemone, to protect themselves from the eels. The limiting factors affect them by killing them.

energy roles

Some examples of energy roles are fish, sharks, and seaweed. The fish nibbles on the seaweed which gives the fish energy, and the shark eats the fish which gives the shark energy ( plants get energy from sun).

The seaweed (plant/producer) receives energy from the sun. The small fish (herbivore/1st level consumer)receives energy from the seaweed it ate. The bigger fish (carnivore/2nd level consumer) receives energy from the smaller fish. The sharks (top carnivore/tertiary consumer) receives energy from the bigger fish.

Producers play a big role in every ecosystem. Without the producer, all the herbivores would die causing all the 1st level consumers to die. that will the cause all the 2nd level consumers to die then later the tertiary consumers to die. The sun produces radiant energy to the plants which turns into chemical energy. The producers will then give energy to the 1st consumer, and the pyramid would continue.

food chains/webs

Food webs point arrows to more than one which shows a variety of what the animals eat. A food chain only has one arrow and it is in one straight line.

If I took the producer out, all of the herbivores would die. If there were no herbivores, all the carnivores die. There would be no energy to give to the next animal, so all of them would die.

energy pyramids

The shape is shaped like a pyramid because it shows the flow of energy. The energy gets smaller ad smaller throughout the process. The least amount of organisms are at the top because the top is smaller than the bottom.

The bottom is bigger because the producers need more energy and the top is smaller because the tertiary consumers don't need as much energy.



You need water (O2), sunlight, and carbon dioxide (CO2) for a plant to go through photosynthesis.

The chloroplast will trap in the radiant energy. The chlorophyll (found inside chloroplast) will take that radiant energy and turn it into chemical energy.


A tropism is a turning or bending movement of an organism toward or away from an external stimulus. An example of a tropism is seaweed.

Seaweed is a positive tropism because it moves toward the stimulus (light). This is an example of phototropism because the seaweed is moving towards the light.


Decomposers help the environment by removing the leftover waste and turning it into nutrients. Some of the decomposers in my environment are fungus, bacteria, marine worms, and sea urchins.


Adaptations help an organism survive. There are behavioral and structural. An example of adaptation is when a seaweed attaches itself onto a rock so it wont flow away.  Another example is that a dolphin is adapted to the water. The dolphins' have a blowhole so the can breathe ( same goes with whales).

Some adaptations are: a dolphin's fins, when a seaweed attaches to a rock, fish swim in groups, whales are warm-blooded.

Whales have adapted to saltwater so if they got changed to a different environment, they would die. Here's some reasons why. For one, they are adapted to saltwater and  the deep waters of it. Freshwater environments have some what shallow (not as deep as the ocean) waters and will most likely be not enough room for the whales and its whale-family. Another reason is, the freshwater doesn't have salt. The salt from the saltwater environment helps heal the cuts or scratches  the whale may have gotten.

natural selection

Natural Selection is the process whereby organisms better adapted to the ecosystem/environment will survive and reproduce more. It is important for natural selection because we don't want a species to grow extinct.

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2 years ago

In the food chains/webs section there was some incorrect grammar. It's food webs point not points, and it's a food chain only has.

2 years ago

I like the flat winkle shellfish though.

2 years ago

@journeywinkle thanks for the tips😄

2 years ago
2 years ago

you could be more specific, but it is still good

2 years ago

be a little bit more specific

2 years ago

@alexusinthanousay ok i will!

2 years ago

@aidenjohnson thanks for the advice

2 years ago

finish your stuff!!!! lol 😄

2 years ago

good job so far!