These bases are heterocyclic rings containing nitrogen, classified as purines or pyrimidines.

So, solving the problem of pollution with more pollution.

C. pollution

And smog.

We heard about polluted air, polluted water, poisoned food.

It's plastic pollution.

References

Pollution can be controlled.

Another 21 of the molecules in dry air are oxygen (O2).

Now another form of pollution that's biological pollution is what happens from excess nutrients.

Its support material of cross linked nitrogen expanded foam improves its retention and durability of its shape.

So, too much pollution could be emitted and people not involved in the production pay the cost of the pollution instead of the firm that initially emitted the air pollution.

There's no poison. There's no pollution.

Siniarska, A. and F. Dickinson.

Pollution, energy shortage, environmental diversity, poverty.

We must rescue the environment from pollution.

Pollution is damaging our earth.

Our cities create serious pollution problems.

This place seems relatively pollution free.

The current draft does not include a goal for pollution on its own, although pollution is included in the health goal.

Denitrification Denitrification is the reduction of nitrates back into the largely inert nitrogen gas (N2), completing the nitrogen cycle.

The canneries are gone. The pollution has abated.

Because of the oil, everybody talked about the polllution.

The P, the first one in HIPPO, is for pollution.

Which means pollution is not inevitable.

Environmental pollution is causing abnormal weather conditions.

The pollution of our coasts is very serious.

This village is free from air pollution.

The government is trying to get rid of pollution.

Pollution is a serious problem in China.

It is also the fourth largest city in the state by population.

You remember how India was. There was no pollution.

Dianna Cohen Tough truths about plastic pollution

cleaning up of pollution including oil spills

After all, their form of transport produces no pollution at all.

This place seems to have relatively low levels of pollution.

The marginal private cost is less than the marginal social or public cost by the amount of the external cost, i.e., the cost of air pollution and water pollution.

Kurlovich, B.S., Rep ev, S.I., Shchelko, L.G., Budanova, V.I., Petrova, M.V., Buravtseva, T.V., Stankevich, A.K., Kartuzova, L.T., Alexandrova, T.G., Teplyakova and T.E., Malysh, L.K.

Pollution is a far greater disaster than we predicted.

So, pollution killed nearly one in seven of them.

Air pollution is a big issue, he says.

We have to take steps to prevent air pollution.

Stratospheric ozone depletion is believed to be caused by air pollution (chiefly from chlorofluorocarbons).

Examples of these include cytidine (C), uridine (U), adenosine (A), guanosine (G), thymidine (T) and inosine (I).

And then we have two parameters which we were not able to quantify air pollution, including warming gases and air polluting sulfates and nitrates, but also chemical pollution.