Food Webs
herbivore
primary consumer
All living things are made up of _____.
To get credit, you must provide one of two answers.
Carbon and Water
When there is too many of one species in an ecosystem
Overpopulation
Yeast, mushrooms, and mold are this kind of organism.
Which directions do arrows point in a food web?
From producer to consumer (bottom to top)
A carnivore only eats ____.
meat/other animals
Humans are 60-75% _____.
Water
When one organism has been preyed upon too much.
Overhunting
Name one way to increase the rate of decomposition.
Increase in temperature, water, oxygen.
A food web shows "What ____ what" (fill in the blank with a verb)
eats
An organism that gets energy from the sun.
producer
The Law of Conservation of Mass states that matter cannot be ______ nor ______.
Created, destroyed
A species that is newly introduced to an ecosystem where it does not naturally belong.
Alien species
Name one way to slow the rate of decomposition.
Decrease in temperature, preservatives, lack of oxygen.
Primary
First Level
Something that eats both plants and animals.
Omnivore (Will also accept secondary consumer)
The matter that makes up a plant becomes part of the matter of the __________ that eats it.
Consumer, animal, herbivore.
This process returns nutrients to the soil for plant growth.
Decomposition.
Mushrooms give off this gas as they grow.
Carbon Dioxide.
Chains
Organic matter, minerals, rocks, air, and nutrients make up ____.
Soil
Name one substance that cycles throughout an ecosystem
Water
Carbon
Nitrogen
A primary consumer dying out would lead to a(n) (increase, decrease) in secondary consumers, and an (increase, decrease) in producers.
Decrease, Increase
Which best explains the role of a decomposer?
A) Recycles dead materials back into an ecosystem.
B) Creates energy from the sun.
C) Breaks down larger living animals into smaller pieces.
D) Create oxygen for living creatures.
A
Earthworms are a
A Consumer
B Producer
C Decomposer
C