The Arctic fox faces challenges due to climate change, (This animal is known for its thick fur and adaptations to cold climates).
The Arctic fox, which known for its thick fur and adaptations to cold climates, faces challenges due to climate change.
This TV series tells a story of a group of people living on a desert island. (They have a lot of adventures there.)
This TV series tells a story of a group of people living on a desert island, where they have a lot of adventures.
Ann and Phil are starting a new environmental project in Africa. (They have worked together for ten years.)
Ann and Phil, who have worked together for ten years, are starting a new environmental project in Africa.
Central Park is the favourite place of many people. (It is in the middle of Manhattan)
Central Park, which is in the middle of Manhattan, is the favourite place of many people.
A group of experts have decided that it's safe to build a dam on the river. (Their identities haven't been revealed.)
A group of experts, whose identities haven't been revealed, have decided that it's safe to build a dam on the river.
Scientists are still concerned about global warming. (Its results cannot be predicted accurately.)
Scientists are still concerned about global warming, whose results cannot be predicted accurately.
This book explains the reasons why many governments don't care about the environment. (Its author is an ex-minister.
This book, whose author is an ex-minister, explains the reasons why many governments don't care about the environment.
This documentary about polar bears has won many awards. (It was on Channel 1 last night.)
This documentary about polar bears, which was on Channel 1 last night, has won many awards.
Tom decided to go to bed early. (He was going to have an important exam the following day.)
om, who was going to have an important exam the following day, decided to go to bed early.
The growing need for renewable energy is causing new ideas in energy (Renewable energy is getting better and cheaper).
The growing need for renewable energy, which is getting better and cheaper, is causing new ideas in energy.
I remember that when I was six years old my parents took me to the zoo. (I saw an elephant there.)
I remember that when I was six years old my parents took me to the zoo, where I saw an elephant.
Next month I'm going to Tokyo with Jenny. (Her father is Japanese.)
Next month I'm going to Tokyo with Jenny, whose father is Japanese.