Living/Nonliving
Which of the following is an abiotic factor of an ecosystem? A. Weather B. Number of producers C. Number of predators D. Decomposers
A. Weather
A place where an organism lives is called its A. Habitat B. Ecosystem C. Biosphere D. Biome
A. habitat
An ocean, a forest and a grassy meadow are each examples of a complete what?
Ecosystem
Energy that fuels ecosystems on Earth comes from the
Sun
How would a reduction in the number of producers in an ecosystem affect the consumers?
less producers would mean less energy to be consumed.
Which of the following is an example of a biotic factor in an ecosystem? A. Temperature B. Soil C. Number of producers D. Atmosphere
C. Number of producers
All non-living things in an environment are called the _______ factors
Abiotic
Which part of the ecosystem is alive and provides oxygen for animals?
Plants
Which of the following is not true of consumers? A. They get energy indirectly from the sun B. they are also called heterotrophs C. They make their own food D. They sometimes eat other consumers
C. They make their own food
A simple food chain includes birds, insects, and grass. Which will most likely happen to the bird population if a pesticide is sprayed to kill the insects, and the bird population cannot find other food in this ecosystem?
The birds will decrease
Which is a biotic factor operating within an ecosystem? A. The type of climate in a given region B. The carnivores that consume other animals C. The amount of helium gas in the air D. The rate of flow of water in a river
B. The carnivores that consume other animals
The linear sequence of who eats whom in a biological community to obtain nutrition
Food chain
An environment's biotic and abiotic factors interact to make a(n)
Ecosystem
Why are decomposers such an essential part of any food web and ecosystem? A. Decomposers recycle nutrients that keep the flow of energy going? B. Decomposers provide the basis of all energy production in the food web C. Decomposers are responsible for keeping the numbers of herbivores in check D. Decomposers prevent new species from coming into the system
A. Decomposers recycle nutrients that keep the flow of energy going
Woodpeckers live near an area where the forest is being cut down to build houses. What part of their ecosystem will be affected the most?
Availability of food.
Which example shows a relationship between both an abiotic and biotic factor in an ecosystem? A. An insect is food for a salmon B. water carries a rock downstream C. a tree removes a gas from the air D. a flower makes food for a butterfly
A tree removes a gas from the air
All the different populations that live in a specific area.
community
How does energy move through most ecosystems on earth? A. From the sun to consumers to producers B. From the sun to producers to consumers to decomposers C. From the sun to decomposers to producers to consumers D. From the sun to consumers to producers back to consumers
B. From the sun to producers to consumers to decomposers
Organisms in the lowest level of the ecosystem are always
Producers
A forest has become overfull of rabbits. What can we infer from that?
There has been a decrease in predator population.
A rodent population leaves an ecosystem due to decreased temperature and increased rain. What best explains why the rodents left?
Change in abiotic factors (weather)
Organisms that break down the tissue of dead and decaying matter
decomposers
What is the difference between a community and an ecosystem?
A community is living factors, an ecosystem is living and non living factors
What is the most diverse ecosystem on earth?
Rainforests
Too many people move to a beach where loggerhead turtles come to lay eggs. The loggerhead turtle population will decrease because.....
They have lost part of their habitat