Question

11. Hybridization is the process used for plant
in which
characteristics of high yield and resistance to disease, are developed
12. Air contains majority of
16._ _are natural organic substances that are taken from animal wastes a
17. are rich in inorganic nutrients but do not contain humus.
18. Large scale rearing of fish for food is known as
19. Large scale rearing of honeybee is known as
is the artificial supply of water to farms when neede
21 _are unwanted plants that grow along with the crops.
is very common weed which grow with almost every crop
20._

Answer 1

Answer:

12. NITROGEN

19 . Apiculture  , IRRIGATION

21 . WEEDS , AMARANTHUS

Explanation:

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