Meaning: "phenomenon" means a thing or event that happens and people notice.

Wrong options:

• phenomenom: It has "m" where the word has "n". The right spelling is "phenomenon". Every letter must be correct to get the mark.
• phenomena: "phenomena" is a close word, but it ends in "a". The speaker says "phenomenon", which ends in "on".

Correct answer: deforestation

Explanation: Listen for "burning of fossil fuels and deforestation". The word ends in tion, a word for a thing, person or idea.

Meaning: "deforestation" means cutting down many trees in an area.

Wrong options:

• deforestion: It leaves out the "at". The right spelling is "deforestation". Every letter must be correct to get the mark.
• deforesting: "deforesting" is a close word, but it ends in "ing". The speaker says "deforestation", which ends in "ation".

Correct answer: sustainable

Explanation: On the recording you hear "researching sustainable solutions". You need a describing word that ends in able.

Meaning: "sustainable" means able to continue long term without harming nature.

Wrong options:

• sustanable: It leaves out the "i". Write "sustainable". Only the exact spelling gets the mark.
• sustained: "sustained" is a close word, but it ends in "ed". The speaker says "sustainable", which ends in "able".

Correct answer: renewable

Explanation: Listen again to "Among these, renewable energy sources". The sentence needs a word that starts renew and ends in able.

Meaning: "renewable" means able to be made again naturally, like wind or sun power.

Wrong options:

• renewible: It has "i" where the word has "a". Write "renewable". Only the exact spelling gets the mark.
• reusable: This is a different word and usually means you can use an item again, not the energy type.

Correct answer: transitioning

Explanation: Here you hear "However, transitioning to these cleaner energy". You need an action word that ends in ing.

Meaning: "transitioning" means moving from one system or way to another.

Wrong options:

• trasitioning: It leaves out the "n". Check the letters: "transitioning". A small spelling mistake loses the mark.
• transition: "transition" is missing the ending. The speaker says "transitioning", with "ing" at the end.