Why - DNA strands are considered antiparallel.

DNA strands considered as antiparallel, Give reason.

Why horse and ass are considered to be two different species or animals?

Why are air, water and land considered to be valuable natural resources ?

In a DNA strand the nucleotides are linked together by:

Why is DNA replication called semiconservative?

why respiration is considered an exothermic reaction?

Why lichens are considered as pollution indicators?

Which features can be considered as all inclusive characteristics of life? Why?

Why do basal body of bacterial flagella considered as smallest motor in the world?

Even though the cranium of elephant is larger than that of man , humans are considered more intelligent than elephant . Why is it so ?