IELTS Vocabulary Related to Natural World

What term describes the behavior of animals living or spending a significant amount of time in trees?

• Terrestrial
• Aquatic
• Arboreal
• Aerial

Which term describes the permanent frozen ground found in cold regions, often affecting the distribution of plant and animal life?

• frostbite
• icecap
• chillzone
• permafrost

What is the term for the adaptation where animals blend into their environment to avoid detection by predators or prey?

• concealment
• invisibility
• disguise
• camouflage

Which term refers to the phenomenon of animals seeking refuge in underground burrows or dens to survive harsh weather conditions?

• migration
• estivation
• torpor
• denning

What is the term for the state of suspended animation exhibited by certain organisms, allowing them to survive extreme conditions?

• bioluminescence
• cryptobiosis
• osmosis
• hibernation

Estuaries are valuable ecosystems that support high levels of _______________, including various fish, birds, and plants.

The _______________ zone, where freshwater meets saltwater, is a rich habitat for diverse marine life.

_______________ birds travel long distances between their breeding and wintering grounds each year.

The _______________ region is known for its unique species found nowhere else on Earth.

Some species exhibit _______________ behavior, marking and defending specific areas as their own.