MCQ
_________ are the cyclic pathways through which chemical elements move from environment to organism and back to the environment.
- ABiogeochemical cycles
- BGeo-chemical cycles
- CPhysio-chemical cycles
- DAll of the above
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$I.$ Natural selection is essential for evolution
$II.$ Natural selection do not include variations
$III.$ Concept of natural selection was given by Hugo de Vries
$IV.$ Mutation is the sudden inheritable change
$V.$ Synthetic theory is also called Neo-Darwinism theory of evolution The correct combination is a
$R$ - $AIDS$ is caused by $HIV$.