True or False?
By studying populations, we learn how to protect them.
What is true?
A ______________ is a model that shows one set of feeding relationships among living things.
What is a food chain?
True or False?
A food chain will always start with a consumer and end with a producer.
False.
A food chain will always start with a producer and end with a consumer.
flowers-bobcat-deer-wolf
Not a food chain. It should be:
flowers-deer-bobcat-wolf
__________ is the ability to do work.
What is energy?
True or False?
Changes to one population can not affect other populations in the habitat.
What is false?
Changes to one population can also affect other populations in the habitat.
An _____________ includes living and nonliving things that interact in an environment.
What is an ecosystem?
These put nutrients back into the soil so that plants can use them again.
What are decomposers?
corn-bird-cat-wolf
Yes, it is a food chain!
An ______________________ is a flat, slanted surface that makes it easier to move objects to higher or lower places.
What is an inclined plane?
True or False?
We measure a population by the color and size of individuals in a certain area.
What is false?
We measure a population by the number of individuals in a certain area.
A ___________is a location in which an organism lives.
What is a habitat?
Animals are considered these because they depend on producers for energy and nutrients.
What are consumers?
carrots-bobcat-rabbit-fox
Not a food chain! Should be:
carrots-rabbit-fox-bobcat
___________________is a force that acts between two objects that are in contact with one another.
What is friction?
True or False?
Animals are considered decomposers because they depend on producers for energy and nutrients.
What is false?
Animals are considered consumers.
A ___________ is the number of a particular type of organism that lives in a region.
What is a population?
This is a model that shows one set of feeding relationships among living things.
What is a food chain?
corn-mouse-snake-hawk
Yes, it is a food chain!
________________________ is a vibration that travels through a material such as air or water.
What is sound energy?
True or False?
When people change an ecosystem, these changes can affect populations of species in that ecosystem.
What is true?
A ___________ is a group of organisms that share similar characteristics and can mate with each other to produce offspring.
What is a species?
These are at the bottom of a food chain.
What are plants?
grass-grasshopper-snake-frog-eagle
Not a food chain! Should be:
grass-grasshopper-frog-snake-eagle
A ________________ has one or two sloping sides and holds objects in place, like a door stop holding a door.
What is a wedge?