WorksheetsEcosystems
Total questions: 20
Worksheet time: 15mins
An organism in an individual _____ thing.
nonliving
living
A population is a group of organisms of ____ ______ that live in the same area.
different things
several types
one type
living things
A community includes __________ _____________ that live together in a certain area.
one population
multiple populations
nonliving things
living things
An ecosystem is all the things that __________ in a certain area, both living and nonliving things.
play
sleep
interact
A food web is a (a) of food chains within an ecosystem. Most living things eat more than one type of food, so their food chains overlap and connect.
A consumer is an organism that (a) other living things for food.
A producer is an organism that (a) their own food.
A decomposer is an organism that ______ _______ dead plants and animals and turns them into nutrients in the soil.
(a)
Organisms (a) on other organisms and the nonliving parts of their ecosystems to survive.
An ecosystem must remain (a) in order to sustain the organisms over time.
Some changes that can disrupt the balance of an ecosystem are:
fires burning during vegetation
people cutting down forests to build neighborhoods
droughts taking away the source of water
all of the above
If any food or water source becomes scarce, the plants or animals that need the resource might (a) .
The organisms, or living things, in an ecosystem include:
plants
animals
fungi
bacteria
all of the above
Plants use ____________ to produce their own food.
energy
photosynthesis
magic
Decomposers are things like ________ and ___________ .
rabbits and foxes
berries and nuts
fungi and bacteria
We use _____ to show how energy flows through an ecosystem from a producer to a consumer, and onto other consumers.
food webs
food chains
both
Animals eat other animals to get ____________ in order to grow and repair.
food
energy
full
An apex predator is an animal that feeds on other animals but is at the _____ of the food web, meaning that it has no predators.
top
middle
bottom
Humans over- (a) predators such as wolves can lead to a boom in the population of their prey (deer). This can lead to all of those deer eating too much grass.
When humans _____ ________ trees it affects fish in streams and rivers because the soil erodes.
(a)
