The first life on earth came in water and evidences indicate that life orginated in one of the following eras
The atmosphere became oxidising with the appearance of
Which of the following diseases are known to becaused by viruses? (In this item one or more of the answers given may be correct. Decide which are correct and mark the answer sheet according to the code)
$1.$ Burkitt's lymphoma
$2.$ Adult $T-$ cell leukemia
$3.$ Phenyl ketonuriaCode
$A$ : Muscles of external ears are fully developed in humans.
$R$ : These muscle helps in moving ear pinna in human.