Description
Reproduction
Circulatory
Exploring a frog
Danger Danger
100
These are found in damp northeastern woodlands
What is the red-backed salamander?
100
This is where most amphibians lay their eggs
What is water?
100
Two upper chambers of the heart
What is the atria?
100
Makes a frog an excellent leaper
What is hind legs?
100
Amphibian population is decreasing all over the ______
What is the world?
200
This means double life
What is amphibian?
200
From larvae to adult
What is metamorphosis?
200
Lower chamber of the heart
What is the ventricle?
200
Has three chambers
What is the heart?
200
There is a picture of this endangered animal on page 394
What is red-spotted newt?
300
Frog or toad larval form
What is a tadpole?
300
Eggs fertilized before they are laid
What is internal fertilization?
300
Amphibians circulatory system has two _______.
What is loops?
300
The frogs tongue is attached at the front of this
What is the mouth?
300
Amphibians are sensitive to changes in this
What is environment?
400
The throat of this frog inflates
What is a "peeper"?
400
Amphibian eggs are coated with clear _________
What is jelly?
400
Where amphibians obtain oxygen and release carbon dioxide
What is the skin?
400
This allows predators to be seen in the water
What is the eyes?
400
These people are working hard to understand why amphibians are in danger
What are scientists?
500
Oozes liquid from behind their eyes
What are toads?
500
Eggs that are fertilized by male sperm
What is external fertilization?
500
This tiny thing develops inside each fertilized egg
What is an embryo?
500
Look like small drumheads
What are the ears?
500
These are the main danger to amphibians
What is poison or insecticides?
M
e
n
u