Blood is purified by
difference between habit and habitat?
If plants have no chlorophyll,what will happen?
Respiratory quotient?
Which plant is known as sun dew plant? why?
what are the problems faced by indian farmers in cotton agriculture?
Why do some seeds not germinate?
How can the algae be cultured?
Compare the adaptation of mesophytes with amphibious hydrophytes with nature ?
How can you tell how old a tree is without cutting it?
Give classification of cyanobacteria?
what are the advantages of nitrogen and phosphorus in plant fertilizers?
what is the relationship between soil pH and base saturation capacity?