A specific part of the abiotic environment.
A way of describing all the living parts of an ecosystem.
A group of organisms that can successfully mate with each other and reproduce.
Part of the natural decomposing materials in soil.
Abiotic parts of the environment, such as climate, air, and soil.
Biotic parts of the environment, such as animals and plants.
Interactions between organisms.
Interactions between organisms as well as the interactions between organisms and their environment.
All the interacting organisms that live in an environment and the abiotic parts of the environment that affect the organisms.
A person who observes and studies the interactions between the biotic and abiotic parts of the environment.
The relationship among the biotic parts of the environment.
The relationship between all the abiotic elements of a pond.
An organism that produces its own food.
An organism that does not need food to survive.
An abiotic organism.
An organism that cannot produce its own food.
Plants and phytoplankton.
Plants and consumers.
Consumers and phytoplankton.
Phytoplankton and chlorophyll.
Phytoplankton and herbivores.
It compares the number of consumers to the number of micro-organisms in an ecosystem.
Food chains use only a small sampling of organisms.
A food web explains why there are more producers than consumers.
Producers are usually eaten by many different consumers and most consumers are eaten by more than one predator.
Heat the atmosphere and the Earth’s surface.
Carry on photosynthesis.
Heat and evaporate water.
Absorbed by an object.
Transmitted through the atmosphere.
Converted into sugar by photosynthesis.
Reflected by an object.
Transferred to plants.
A primary consumer.
A secondary consumer.
A tertiary consumer.
1 000 kJ
Paramecium A is the predator, paramecium B is the prey.
Paramecium B is the predator, paramecium A is the prey.
The introduction of paramecium B is followed by a decline in the population of paramecium A.
Paramecium B reaches a steady state of growth.
Paramecium A reaches a steady state of growth.