Answer:
Ozone layer... pollution
Explanation:
The ozone layer is a layer in the atmosphere which provides a barrier between harmful UV rays and the Earth. However, pollution is quickly depleting the layer which in turn creates a higher risk of skin cancers and other conditions caused by harmful UV rays.
There would be a decrease in consumers and decomposers.
Answer: Protists
Explanation:
The protists are organisms which have characteristics similar to both plants and animals. There is huge diversity of protists on earth as they are single celled organisms and they increase in numbers by reproduction. They have a specialized cellular structure which includes organelles like nucleus, mitochondria, and others which are characteristic features of the eukaryotic organisms. They live in moist environment. They engulf their prey this way they are heterotrophic and they can also photosynthesize like plants.