salt water fish tends to ____ water
lose
what type of egg does reptiles have
terrestrial
what is the characteristics that only birds have
having feathers, thin and hollow bone, toothless beak
how do fishes reproduce
female lays the egg then the male sprays sperm on them
reptiles are ____ - blooded animals
cold-blooded
how is the shell of a bird's egg
hard
what can scales of a fish do
tells what is the age of a fish and protects the fish
what can the scales of a reptile do
protects the reptile, and help prevent the loss of H2O in dry environment
where is the respiratory of a bird and why is it there
near the pharyax or the throat so birds can get Oxygen faster to fly
what is a swim bladder
a balloon like organ filled with O2 and others gases to give fishes the ability to float
how dose reptile breath
using their lungs
birds has a _ chamber heart
four
are fishes clod-blooded or warm-blooded
cold-blooded
reptile has a ______ gut
through
how many legs do birds have
two, oviously