Desert
Forest
Tundra
Ocean
Grassland
100
active at night
What is nocturnal?
100
located near the equator- very hot and humid most of the time
What is a tropical rainforest?
100
layer of soil that is always frozen
What is permafrost?
100
help kelp float
What is an air bladder?
100
Another name for a temperate grassland in North America
What is a prairie?
200
Largest desert in North America
What is the Sonoran Desert?
200
has 4 distinct seasons
What is temperate forest?
200
an arctic fox's white fur is an example of
What is camouflage?
200
5 oceans-
What are Atlantic, Pacific, Indian, Arctic, and southern oceans?
200
holes animals dig in the ground to hide are called
What are burrows?
300
less than 10 inches of this falls here
What is rain?
300
these trees lose their leaves after they change colors
What are deciduous trees?
300
fat
What is blubber?
300
the ocean is home to about how many living things
What is billions?
300
groups of animals that stay close together for safety
What are herds?
400
thorns help a mesquite tree by
What is protecting it from thirsty animals?
400
these trees don't make seeds from flowers--instead they use cones
What are coniferous trees?
400
plants grow in these
What are clumps?
400
the ocean is the world's largest_____
What is habitat?
400
Grasses provide this from the cold and wind
What is shelter?
500
desert soil has very little
What is humus?
500
when an animals imitates another animal to protect itself
What is mimicry?
500
when animals move to another location to adapt to a fierce environmental change
What is migration?
500
these help fish breathe underwater
What are gills?
500
The Serengeti Plain in Africa is an example of this
What is a savanna?
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