dog : cat

hamster : cage

barn : horse

water : glass

cold : hot

bay : pier

(hint: a pier is a platform leading out from the shore into a body of water)

snow : mountains

swim : ocean

water : lake

ocean : shells

magma : lava

(hint: magma is hot fluid material below the earth's crust from which lava is formed on cooling)

underground : sand

refrigerator : cool

books : paper

ocean : breeze

fire : water

channel : mud

(hint: a channel is a hollow bed for a natural waterway)

brick : house

waterfall : stream

vein : blood

(hint: veins are tubes in the body that carry blood toward the heart)

coke : juice

coffee : tea

thirsty : hungry

starving : food

ocean : bikes

parking lot : cars

river : rafts

planes : sky

mammals : reptiles

dam : river

fossil fuels : gas

(Hint: fossil fuels are natural fuels such as coal or gas, formed in the past from the remains of living organisms)

food : plants

fish : whales

polar bear : arctic

dogs : cats

horse : desert