pu____ tr_______
public transport
How many people are expected to live in cities by the year 2050? A. about 30 per cent B. less than 50 per cent C. nearly 70 per cent
C. nearly 70 per cent
In the future, people can grow vegetables in .....? A. the sky B. the roof garden C.the ground
B. the roof garden
tr_ _ _ _ _ j_ _
traffic jam
Where will the energy of the future come from?
FROM RENEWABLE ENERGY
A_
AI
How many people by 2050 the world's population is expected to reach?
10 bilion
infr__________
infrastructure