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Worksheets3.3 Change within Ecosystems
Total questions: 9
Worksheet time: 5mins
______________________ is a series of changes in a community of an ecosystem.
Pollution
Competition
Succession
Stable
_____________ means unchanging.
Succession
Stable
Competition
Consumers
When two or more organisms need the same limited resource to survive it is called ________________________.
producer
consumer
giving up
competition
A powerful volcanic eruption destroyed the living things in a once stable ecosystem. The first organisms that grow again in the ecosystem are ________________________ because they can make their own _________.
animals food
consumers food
producers food
producers steak
An ecologist is studying a lake ecosystem in South America. What kinds of changes could cause the ecosystem to become unstable? _____________________ by the nearby human population and _____________________ flowing into the lake from nearby factories.
pollution overfishing
pollution food
overfishing consumers
overfishing pollution
Adding rabbits to a forest ecosystem would make it more ______________ for deer to find ________.
difficult food
difficult overfishing
convenient food
convenient consumers
If trees were removed from an ecosystem, there would not be enough ____________________, and the population of _________________ would decrease.
producers plants
producers consumers
producers producers
consumers producers
In an ecosystem with hawks and eagles, why might the population of eagles decrease? The hawks will _________________ with the eagles for ________.
live a year
compete pollution
compete food
live food
If you remove ___________________ from an ecosystem, the number of ___________________ would grow larger.
consumers producers
consumers rabbits
producers consumers
producers sunflowers
