Respiratory system= breathing system
To keep our Respiratory system healthy we should:
1- never breathe in front of polluted areas
2- never pollute our areas
3- try to make our environment normal
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Answer:</h2>
Genetic engineering
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Explanation:</h2>
Genetic engineering or recombinant DNA innovation includes the gathering of procedures used to cut up and consolidate hereditary material, particularly DNA from various natural species, and to bring the subsequent half breed DNA into a creature so as to frame new mixes of heritable hereditary material.
It is the base involved in production of hybrid species which has characteristics of different superior breeds. It has wide range of application in the field of agriculture and medicines. In agriculture, it is used to come up with crops that are resistance to pest and insect.
The cell will not be able to produce energy
