Canadian shield is composed of Precambrian rocks that cover 2.8 million square miles.
Answer:
The relationship between population growth, resource consumption, and environmental degradation is complex: Consumption patterns have the most effect on ozone depletion, while population growth threatens biodiversity of and within species through the destruction of ecosystems.
Explanation:
The correct answer is - because workers are needed for development projects.
The countries in the Arabian peninsula has developed significantly in the last decades and are continuing that trend, so for the fast, modern, development they need a lot of workers which they do not have, so they offer jobs to foreigners.
