In an experiment to investigate the effect of nitrogen on...
In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of
washed sand
saw dust
cow dung
clay soil
Correct answer is C
No explanation has been provided for this answer.
An example of a trace elements is ...
Which of the following structures transports water from the roots to the leaves? ...
Which of the following statements is correct? ...
Which of the following adaptations is NOT concerned with the flight of birds? ...
Display is a phenomenon which occurs when an animal is ...
Which of the following diseases is caused by a bacterium? ...
The Phylum of the organism labeled IV is ...
Most fishes do not sink in water because of the presences of: I. swim bladder II. air bladder III...