define:-
a) microbes
b) pathogens
c) nitrogen fixation
d) pasteurization
e) preservatives
f) carriers
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define:-
a) microbes
b) pathogens
c) nitrogen fixation
d) pasteurization
e) preservatives
f) carriers
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b)Pathogens are harmful microorganisms which are disease-causing.
c)Nitrogen fixation is the process by which free atmospheric nitrogen is converted into nitrogen compounds by the rhizobium bacteria found in leguminous plants/ blue green algae.
d)The process of heating the milk at 70°C for 15-30 seconds and suddenly cooling and storing them for the stunt/stopped growth of microorganisms in the milk, it was discovered by Louise Pasteur.
e)Preservatives/Food preservatives: Food or certain things can be preserved by using certain chemical substances which can check on the growth of microorganisms. Such chemical substances are called food preservatives.
Example:Sodium benzoate, sodium/potassium metabisulphate.
f) (If it is the chapter microorganisms friend or foe you are asking then) Carriers are agents of carrying diseases by various mode of transmission like air, water, food, contact and seeds etc..
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