Idiom
Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

By cyanobacteria
By industrially synthesised fertilizer
By denitrification
By electrical discharges in the atmosphere

ANSWER DOWNLOAD EXAMIANS APP

Idiom
To smell a rat

To get bad small of a bad dead rat
To suspect foul dealings
To be in a bad mood
To see signs of plague epidemic
None of these

ANSWER DOWNLOAD EXAMIANS APP