finish the sentence
Scientists classify animals by their characteristics
characteristics
_______________have eyelids and lungs as adults
amphibians
The stages of all animals’ life cycles are _________, growth, reproduction, death.
birth
Both _____________ and fish are cold blooded vertebrates.
amphibians
An animal that hunts other animals is called a ________
predator
A cold-blooded animal’s temperature ________with its surroundings
changes
_______ some have spines for protection
fish
The stages of all animals’ life cycles are birth, ________, reproduction, death.
growth
Both amphibians and ______ are cold blooded vertebrates.
fish
An ________ that hunts other animals is called a predator.
animal
Some fish reproduce by giving birth to live___________
offspring
___________ have two antennae
insects
The stages of all animals’ life cycles are birth, growth, ______________, death.
reproduction
Both amphibians and fish are cold blooded ___________.
vertebrates
An animal that ________other animals is called a predator.
Insect and spiders are _____-blooded invertebrates.
cold
__________- some have movable upper jaws
reptiles
The stages of all animals’ life cycles are birth, growth, reproduction,___________.
death
The process of an animal changing form as it grows is called _______________.
metamorphosis
A scientist who studies how animals behave is called an animal _______ scientist.
behavior
Scientists classify _________ by their characteristics.
animals
__________- use silk to catch food and make egg sacs
spiders
The stages of all animals’ life cycles are _____, growth, reproduction, _______.
birth and death
The process of an animal changing form as it ______ is called metamorphosis.
grows
A scientist who studies how animals behave is called an animal behavior _________.
scientist