... What is conservation? Conservation is the safeguarding and presevation of natural resources Will the world’s resources never be used up? Yes, they will What is concerned with the prevention of ... fight against pollution of our environment, in particular, the dirtying and poisoning of air and water Conservation is also concerned with the reclaiming of land by irrigating desert, draining swamps ... train B you don’t have a reservation, you can’t travel on this train C you don’t have a reservation, you can travel on this train D you won’t have a reservation, you can’t travel on this train...