An ecosystem is made up of......
a group of living things and their physical surroundings; different communities
individual organisms; only living things
groups of the same species; populations
Photosynthesis Sunlight Producers( Photosynthesis, Sunlight, Producers ) happens when a plant uses the Sun's energy to convert water and carbon dioxide into carbohydrates such as sugars and starches.
What do decomposers do? (click all that apply)
Consume waste and dead organisms to get energy
Return nutrients to the soil, water, or air.
Break down material from waste and dead organisms.
No energy is lost in an ecosystem.
Nutrients are continuously lost through the food web.
Which of the following are nutrients in an ecosystem? (check all that apply)
water, carbon, oxygen
nitrogen, calcium,
producers, consumers
Producers take in carbon dioxide oxygen( carbon dioxide, oxygen ) during the process of photosynthesis and release oxygen carbon dioxide( oxygen, carbon dioxide ).
Consumers Producers( Consumers, Producers ) take in oxygen for their life processes and release carbon dioxide.
A producer consumer( producer, consumer ) is a type of organism that undergoes photosynthesis, converting energy into a usable form of food for other organisms in an ecosystem.
What form of energy is lost by moving from producer to consumer to decomposer in an ecosystem?
light
heat
food energy
A producer consumer( producer, consumer ) is a living thing that can make its own food.
A consumer producer( consumer, producer ) is a living thing that eats other living things for food and energy.
How is a food web different from a food chain?
Food webs are a group of overlapping food chains in an ecosystem.
Food webs include at least one spider as a primary food source.
Food chains are more complex than food webs.
In a food web or food chain, carnivores are the most plentiful (numerous) member of the ecosystem.
What is an energy diagram?
A diagram that shows how energy moves from one feeding level to the next in the food chain.
Alternate forms of energy available to animals in an ecosystem.
A diagram which shows how each member of an ecosystem gets its food.
Which of the following is true about an energy pyramid? (check all that apply)
There are more producers than herbivores or carnivores in the ecosystem.
As you move up to the top of the pyramid from producer to consumer, the diagram becomes smaller and smaller to show how less and less energy is available.
Energy drops about 10% from each level of the pyramid.
Symbiosis Competition Predator-Prey( Symbiosis, Competition, Predator-Prey ) is an interaction where two species live together for a long time and at least one of the species benefits.
Competition Symbiosis Predator-prey relationship( Competition, Symbiosis, Predator-prey relationship ) happens when two or more species depend on the same food source or any limited resource.
In symbiosis, both organisms must benefit from an interaction.
Predator-Prey relationships are bad because a cute animal gets killed.
A population biosphere ecosystem community( population, biosphere, ecosystem, community ) is a group of individuals of the same species living in a given area.
The change in size of population over time is called its growth rate community( growth rate, community ).
What limits population growth? (check all that apply)
The amount of food available.
The amount of space available.
Competition from different species for food.
What is a pollutant?
A variable that causes harm to an organism.
An invasive species.
Competition between two species for the same prey.
What often determines how harmful a pollutant is? (check all that apply)
The pollutant's ability to cause harm.
The amount of pollutant in the air, water, or soil.
How long the pollutant stays in the air, water, or soil.
Why are toxins heavily concentrated at higher predator levels in the food chain?
Because toxins are stored in the fatty tissues of animals and are not passed out of their body. This multiplies as one moves higher up the food chain.
Because higher level predators like the taste of toxins.
Because only top carnivores store toxins in their body.
What are some examples of pollutants?
mercury and sulfur dioxide
The European Green Grab and the Cane Toad
Turbidity and pH scale
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