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What are the benefits of a land bridge?
They allow safe crossing points for animals over highways.
Why do birds build nests?
To provide protection for their eggs.
24. Sofia was studying a forest ecosystem and its organisms for 1 month. She made the following graph to summarize her findings about the relationship between the deer and wolf population after it became legal to hunt wolves. What does t
As the population of wolves increases, the deer population decreases.
23. After a wildfire, is the ecosystem stable or unstable?
unstable
22. According to the list, what biotic factors do wildfires affect?
insects and trees
21. How do wildfires harm forest ecosystems?
Burn healthy plants, destroy habitats, could harm animals
20 Which organism will return nutrients to the soil?
Mushroom
19. Which organism is a herbivore?
Cottontail Rabbit
18. Which organism is a decomposer?
Mushroom
17. Which organism does not get its energy from another biotic organism?
Oak Tree
16. Which organism is a carnivore?
Mountain Lion
15. Which organism is a producer?
Oak Tree
True or false: A food web only shows the movement of living things in an ecosystem.
False - it shows the transfer of energy in an ecosystem
14. What organism’s energy will initially increase with the removal of the rabbit
Plants
13. What 2 organisms would be directly impacted by the removal of rabbits from this ecosystem?
Wolves and Plants
12. What is the primary source of energy for all living things?
The Sun
11. What do the arrows represent in this food web?
Flow of energy
10. What 2 organisms’s energy will initially decrease with the removal of frogs from this food web?
Owl and Snake
9. What is missing from the food web, that provides energy for the producers?
The Sun
8. Whose population will increase if we remove birds from the food web?
Grasshoppers
7. What 2 organisms rely on a mouse for energy?
Fox and Owl
6. ____ - All the food chains in a single ecosystem combined
A - Food Webs
5. _____ - An organism that is nonnative to an environment and disrupts the stable web of life
D - Invasive Species
4. _____ - The process of cutting down trees to plant crops
E - Deforestation
3. _____ - any waste or contamination that harms or dirties an ecosystem and its organisms
B - Pollution
2. _____ - The preserving and protecting of an ecosystem or a resource
C - Conservation
1. _____ - a community of organisms and the environment in which they live
F - Ecosystem