A
sorting things into groups based on characteristics
classification
an animal with a backbone
vertebrate
warm-blooded animals that drink their mother's milk
mammals
mammals body covering
fur/ hair
home for living things
habitat
kingdom
an animal without a backbone
invertebrate
warm-blooded animals that have a beak and wings
birds
birds body covering
feathers
all nonliving and living things in a given area
ecosystem
living thing made up of one or more cells
organism
an animal whose body temperature stays the same whether it is hot or cold outside
warm-blooded
cold-blooded animals that have gills to breathe under water
fish
fish body covering
scales
variety of life on Earth
biodiversity
group of organisms that are alike in many ways
species
an animal whose body temperature depends on whether it is cold or hot outside
cold-blooded
cold-blooded animals that have scales
reptiles
reptiles body covering
scales
gradual increase of Earth's temperature
global warming
series of physical changes that some animals go through to become adults
metamorphosis
animals with skeletons on the outside of their bodies
arachnids
cold-blooded animals that live both on land and in the water
amphibians
amphibians body covering
moist skin
clearing a wide area of trees
deforestation