Read the following passage and fill in each gap with a suitable word based on the information of the text:

Fish population is in serious danger from global warming. Climate change is increasing the water temperature in rivers, lakes and sea. This means there is less food and oxygen available for fish. It also means the fish may not grow fully and may have fewer fish fries. Some fishes will become extinct if temperatures rise even by one or two degree Celsius. Climate change increases the pressure on fish population. Fishes are one of the world's most valuable biological assests. Forty percent of people in the world eat fish as their main source of protein. If we fail to reduce greenhouse gas emissions we will increase the pressure on fish. As a result, people who depend on fish will suffer from hunger and poverty.

Global warming raises the stress on fish population. Fish population is severely affected (a)____ to global warming. For want of food and oxygen some (b)____ of fish may be (c)____ one day. To stop global warming, we have to convince people not to (d)____ greenhouse gas. Otherwise many people have to (e)____ poverty and hunger.