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The Story of Earth Hour

Every year, in late March, people and institutions come together to switch off all non-essential lights for sixty minutes. This global event is a clear 1. ?

(EVIDENT) of the growing support for the fight against the climate crisis and the 2. ?

Answer: loss
Explanation: The noun ‘loss’ is needed after the definite article ‘the’ to describe the reduction of biodiversity.

(LOSE) of biodiversity. By measuring the reduction in energy 3. ?

Answer: consumption
Explanation: The noun ‘consumption’ forms a compound concept with ‘energy’ to describe how much is used.

(CONSUME) , people show that it is possible to make a significant 4. ?

Answer: difference
Explanation: The noun ‘difference’ is used here after the adjective ‘significant’.

(DIFFER) to the health of our planet. However, Earth Hour is more than a single hour without lights; it is part of a broader 5. ?

Answer: movement
Explanation: The noun ‘movement’ refers to a group of people working toward a shared goal.

(MOVE) of people working together to protect the.

The World Wide Fund for Nature in Australia first initiated the idea in 2007 to raise 6. ?

(AWARE) about climate change. The first event in Sydney was a massive 7. ?

Answer: achievement
Explanation: The noun ‘achievement’ describes a great success.

(ACHIEVE) , with more than two million residents and 2,000 businesses taking part. Even the 8. ?

Answer: famous
Explanation: The adjective ‘famous’ is needed to describe the well-known Sydney Opera House.

(FAME) Sydney Opera House went dark. People in San Francisco were so inspired that they arranged their own “Lights Out” event later that year.

The initiative has seen incredible 9. ?

(GROW) over the years. In 2008, 35 countries joined in, and by 2012, that number had increased to 152. In recent years, the event has spread 10. ?

Answer: worldwide
Explanation: The adverb ‘worldwide’ means extending throughout the entire world.

(WORLD) , with more than 188 territories participating. Social media has played a huge role, with billions of photographs shared online to show support.

A number of celebrities, including 11. ?

(ACT) Leonardo DiCaprio and singer Ellie Goulding, have put their names to the cause. Many 12. ?

Answer: politicians
Explanation: The plural noun ‘politicians’ refers to people who work in politics.

(POLITICS) and world leaders have also given their support, ensuring that thousands of landmarks—from the Eiffel Tower to the Pyramids—turn off their lights.

The movement has led to many 13. ?

(PRACTICE) results. For instance, they have planted millions of trees in 14. ?

Answer: various
Explanation: The adjective ‘various’ describes a collection of several different things (countries).

(VARY) countries and worked to ban plastics in the Galapagos, one of the most important nature reserves on the planet. By visiting the Earth Hour website, you can find out how to join this effort to 15. ?

Answer: safeguard
Explanation: The verb ‘safeguard’ means to protect something from harm or damage.

(SAFE) our planet!