I would rather suggest.....4th one as researcher mad hybrid that is flood resistance by selective breeding !!!
Meiosis is the process that accounts for diversity.
Greenhouse is due to excess of CO2 , Methane gas !! It has both benefits and demerits !!
The answer is (B) Edward's Syndrome, Down Syndrome, Klinefelter's Syndrome.
These syndromes are caused when there is an extra copy of chromosomes present in the cells.
In Edward's syndrome, there is an extra copy of the chromosome 18.
In Down's syndrome, there is an extra copy of chromosome 21.
In Klinefelter's syndrome, there is an extra copy of X chromosome.
The main functions of a petal is to attract an insect with its pretty colors and give the insect a landing pad to collect to pollen