Within the next 50 years, over a third of the world’s population could be living in shanty SLUMS / TOWNS / CITIES, with no sanitation or access to clean water or electricity.

GROWING / DEVELOPING / BUILDING countries.

A community garden would help bring people closer FOR / TO / WITH / BY nature , and it’d give them access to fresh, healthy food.

Efforts to improve life for urban residents have resulted ? some highly innovative schemes, such as rooftop gardens and pop-up green spaces.

One of the major drawbacks of living in isolated,LOW-LEVEL / LOW-NUMBER / LOW-DENSITY communities is that it makes people overly dependent on cars.

A variety of economic and social, as well as historical, factors have contributed ? the rapid growth of cities around the world.

Urban SPREAD / SPRAWL / EXPAND is a problem which affects cities around the globe.

The closure of the youth centre last year has led to an increase in vandalism and SMALL / PETTY / LITTLE / UNIMPORTANT crime .

At the moment there are just abandoned warehouses there, but if we knocked them OVER / OFF / DOWN / OUT , we could create a nice riverside area ...

In some developing countries, the allure of the city has proved too strong, with rural populations declining alarmingly ? a result.

Young people might not cause problems if they had something positive to channel their VIOLENCE / ENERGY / HATRED into, like football or boxing, for example.

Urban REDESIGNING / RENOVATION / RETROFITTING involves finding creative ways to use spaces that already exist in the city, such as converting parking places into INSTANT / POP-UP / FLASH green spaces where residents can sit and relax.