Velcro, self-cleaning glass window and umbrella fabric (paragraph 3)

hook-and-loop fastener (para.3, line 7); two fabrics sticking together thanks to the hooks on one surface and the loops on the other (line 9-11)

its wings and shape imitating those of a bird (paragraph 2, line 3-4)

because it helps us to travel long distances in the air and encourages the development of tourism and trading (paragraph 2, line 5-7)

imitates a dolphin’s shape (paragraph 2, line 8)

the aeroplane and the submarine (paragraph 2, lines 3-4, lines 7-8)

A submarine can help scientists to learn about life under the sea. (paragraph 2, the last sentence)

The material that makes up the glass window has the ability to wash away the dirt in the rain. (paragraph 3, line 5-6)