I know a lot about environmental problems.
We had a lecture on environmental pollution.
We must pay attention to environmental problems.
That paper of his deal with environmental problems.
We ought to be more interested in environmental issues.
Man has a great capacity to adapt to environmental changes.
Not a day goes by without our hearing of an environmental problem.
The children amazed us with their knowledge of environmental issues.
The world is confronted with the problem of environmental pollution.
The destruction of the ozone layer is a serious environmental problem.
Degradation of an ecosystem signifies serious environmental pollution.
The safe disposal of nuclear waste is a major environmental challenge.
The local newspaper now runs a regular feature on environmental issues.
Nature provides other forms of protection against environmental dangers.
The advancing desert is a serious environmental problem in Saudi Arabia.
Improper disposal of industrial waste is a serious environmental problem.
An environmental group is campaigning to end the international whale hunt.
Now musicians include issues such as human rights and environmental pollution.
The Sierra Club, an environmental organization, is largely staffed by volunteers.
Discussion question: What is the most serious environmental problem in your country today?
The environmental award was accepted by a grade 12 student on behalf of the school.
The environmental organization Greenpeace works to help protect our natural environment.
Will Durant once remarked that moral codes adjust themselves to environmental conditions.
This product is endorsed by leading environmental groups as being safe for our environment.
environmental groups are asking the government to stop the destruction of virgin rainforest.