Question

i cannt do this one plzz do it for me

Answer 1

Ans 1 : (a) Excess of soluble fertilizer decrease the quality and fertility of soil.

(b) It also won't let the water to go in to roots of plants hence plants get die to due to exosmosises.

(c) Excess of fertilizer effect the absorption of water by roots.


Ans 2 : Yes , the above statement is true... as the medulla oblongata controls heart beat peristalsis and some other important Involuntary activities ... So an injury to the medulla oblongata results in death.


Ans 3 : In human , n = 23 gametes contain half the chromosome contained in normal diploid cells of the body


Ans 5 : Urbanization these days is so rapid and fast that we have forgotten our foundation . We have forgotten our real faithe , beliefs and customs and practices .
Apart from that , Urbanization is also a key element in causing pollution . It's also results in destruction of wildlife and forest cover.