Changes in Ecosystems Flashcards
List two abiotic factors in an environment:
A. Rock
B. Water
List two biotic factors in an environment:
A. Tree
B. Wolf
What is a population?
A group of the same species.
What is a community?
A group of different species.
Give two examples of microhabitats.
A. Hollow log
B. Ant bed
Explain the difference between Primary succession and Secondary succession.
Primary- no soil to begin with.
Secondary- soil was present to begin with.
What are the stages of ecological succession?
1- (no soil) rock 2- lichen 3- soil is formed 4- small plants 5- shrubs and small grasses 6- tall grasses and flowers 7- small trees 8- climax community
The greater a habitat’s biodiversity, the greater the habitats ________?
sustainability
Why is it important for an ecosystem to have a large biodiversity?
Because when there is a large biodiversity, the ecosystem is very sustainable.
Why are lichens and mosses and mosses a vital part of ecological succession? (They are not decomposers).
They turn rocks into soil by acids in their roots.
How does the pollution affect the surface and groundwater?
When pollution gets into the water, it can harm humans and animals. We drink groundwater, and it can empty into the ocean and pollute animals. It can also empty into river which animals and humans drink.
What is the difference between point source and non-point source pollution?
Examples
Point Source Pollution- knowing exactly where the pollution came from.
Ex: a factory.
Non-Point Source Pollution- not knowing exactly where the pollution came from.
Ex: fertilizer or exhaust.
List these in order:
Population, organism, biome, community, ecosystem.
Organism—Population—Community—Ecosystem—Biome.
List the levels of organization from smallest to largest:
organ, tissue, organism, cell, organ system
Cell—tissue—organ—organ system—organism.
