To speak about ecological problems, you need the appropriate vocabulary.
Ecology - the relationship between living things and the environment, or the scientific study of this;
Concern - to involve someone or be important to them;
Air pollution - damage caused to air by harmful substances or waste;
Water pollution - damage caused to water by harmful substances or waste;
Natural resources - things such as minerals, forests, coal, etc. that exist in a place and can be used by people;
Harmful - causing or likely to cause harm;
Technological - relating to, or involving technology;
Chemical - relating to chemistry or chemicals;
Litter - pieces of paper and other waste that are left in public places;
Plastic - a light, artificial substance that can be made into different shapes when it is soft and is used in a lot of different ways;
Glass - a hard, transparent substance that objects such as windows and bottles are made of
Species - a group of plants or animals which share similar characteristics;
Recycle - to put used paper, glass, plastic, etc through a process so that it can be used again.
Environmental issues concern us all.
Some natural resources, such as natural gas and fossil fuel, cannot be replaced.
Many toys are made of plastic.
We recycle all our newspapers and bottles.