Components of the ecosystem
Level of organization
Trophic levels
Food chains
Food webs
100
What elements make up an ecosystem?
Biotope, biocenosis and interactions between/within them.
100
What level of organization is represented?
Individual.
100
Consumers have ............................... nutrition.
heterotrophic
100
The trophic chain always starts with a producer.
Is it true or lie? Justify your answer.
True, because the organic matter needed in the chain is produced by them.
100
What is biodiversity?
Number and population of different species inhabiting one place.
200
Name the substrate and the environment present in the picture.
Substrate: the tree
Environment: the air
200
How would you define the population?
All the individuals of a species that live in a particular place.
200
What trophic levels exist in an ecosystem.?
Producers, consumers and decomposers.
200
Who's the first-class consumer? What kind of nutrition does it have?
Number 4. It's zooplankton, heterotrophic and herbivorous.
200
How many food sources does the lion have? What about the vultures? 
The lion has two (zebra and gazelle) and the vulture three (zebra, gazelle and lion).
300
If we describe plants in an ecosystem, what component of the ecosystem are we describing?
Biocenosis
300
What level of organization does the image represent?
Community.
300
Secondary consumers are........................................
Carnivores
300
What's the arrow pointing at in a trophic chain?
The course of organic matter.
300
Create a four-element trophic chain.
Grasses, grasshopper, frog, owl.
400
Explain an interaction that you see in the picture.
Beavers build a dam and change the flow of water.
400
Tell me what level of organization each number represents. 
1. Community.
2. Population.
3. Individual.
4. Ecosystem
400
What would happen if the decomposers disappeared into an ecosystem?
That organic matter would accumulate and not disappear.
400
Is the image correct? If not, propose how to improve it.
It's not right, the blue arrows are in the opposite direction.
400
END THE SENTENCE ABOUT ITS PRESERVATION:
The more complex an ecosystem is...
1 … the easier to understand how it works.
2 … the harder it is to adapt to changes.
3 … the more resistant is to environmental changes.
4 ... the more it is affected by external agents.
5 … the faster it will disappear over time.ecosystem is...
3 … the more resistant is to environmental changes.
500
Mention the components of the ecosystem that appear in this image.
Biotope: rocks.
Biocenosis: trees
Interaction: Trees are bent as a result of wind 
500
What's the difference between community and biocenosis?
There's no difference, they're synonymous.
500
What would happen if the secondary consumers disappeared?
Those in 1st grade would increase greatly, and the population of producers would decline.
500
A living being may be at different trophic levels. True or false? Reason the answer.
True, its level is related to the trophic chain depicted by the omnivore, for instance, may vary by place according to the chain.
500
At what trophic level would you place the vulture?
Secondary consumer: grass, zebra/gazelle, vulture.
AND
Tertiary consumer: grass, zebra/gazelle, leioa, vulture.