SPELLING: Ex 4.19 Number these lines in the correct order.

(    )

droplets from the air. The water is enough to keep the beetle alive. Scientists studied the shape and material of the

(    )

useful for power plants and for the heating and air conditioning in airplanes, cars and trains. One of the scientists,

(    )

The scientists believe this new technology could help in many areas of our life. They said it could be very

(    )

nature. She said: "Everybody is excited about bio-inspired materials research."

(    )

materials that can collect water from the air. This will help people who live in very dry areas.

(    )

beetle's bumps. They want to use what they found out about the beetle to make their own

(    )

of the Skeleton Coast in Namibia are very dry, but the Namib desert beetle is an expert at surviving in hot and

(    )

from the air. They got their idea from a small beetle that lives in the desert in Africa. The deserts

(    )

dry conditions. Its shell is covered in small bumps that collect tiny water

(    )

temperature, significantly improving the overall energy efficiency." Another scientist, Joanna Aizenberg, said she

(    )

to liquid water. [Our] design could help speed up that process and even allow for operation at a higher

(    )

was looking forward to the future of getting ideas for new technologies from

(    )

Philseok Kim, said: "Thermal power plants, for example, rely on condensers to quickly convert steam

(  1  )

Scientists may have found one answer to the problem of water shortages. It is a new material that collects water