The young people, aged from ten to 20, were then sent for indoctrination programmes 'in a closed environment'.

These studies only measured honey production versus comb production; they did not account fully for bees' feeding in a closed environment.

By identifying interpersonal barriers in a closed environment, a manager can work with all parties involved to address and resolve these problems.

Develop closed environment life support systems for space.

Intervention to maintain good water quality allows a larger number of shrimp to live in the open system than can survive in the relatively poor quality closed environment.