Read the following paragraph and complete it with one suitable word in each blank

About 65 million years ago, the dinosaurs became extinct. The hot, dry climate of the Cretaceous Period quickly changed as a result of an asteroid hitting the Earth. This collision sent dust and debris (1) the atmosphere which blocked sunlight from reaching the Earth's surface. The dinosaurs could not quickly adapt to the Earth's colder climate and eventually became (2). While the dinosaurs are no longer with us, today a number of plant, insect, and animal species are finding their habitats being destroyed, and they too are in danger of extinction. Human activities that are destructive to the (3) such as the development of industry, housing, and farming are destroying the habitats of many species. For example, in the Amazon Rainforest, thousands of hectares of forest are being destroyed as (4) are being cut down to make way for cattle farms, logging and housing. Scientists warn that many plant and animal species from this area of the world will become extinct soon unless we quickly stop (5) their habitats.