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 (a)   , including various fish, birds, and plants.

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

(a)   birds travel long distances between their breeding and wintering grounds each year.

The (a)   region is known for its unique species found nowhere else on Earth.

Some species exhibit (a)   behavior, marking and defending specific areas as their own.