___ is supplied by water to plants.
Hydrogen is supplied by water to plants.
____ is supplied by water to plants.
_________ is supplied by water to plants.
Question 31 Fill in the blanks (a) A total of ___ nutrients are essential to plants.
(b) ___and ___ are supplied by air to plants.
(c) ___ is supplied by water to plants.
(d) Soil supply ___nutrients to plants.
(e) ___ nutrients are required in large quantity and called as ___.
(f) ___ nutrients are needed in small quantity for plants and are called ___.