The primary cause of biodiversity loss is .....

If the forest area is reduced to half,which one of the following will be a long-term effect?

If the forest area is reduced by half,what is the long-term consequence likely to be?

Which species has become extinct due to overexploitation by humans?

$A$: Habitat destruction is the main reason for the loss of biodiversity.
$R$: This actually causes an increase in edge area and a reduction in core area.

Which of the following statements is correct regarding Parthenium (Carrot grass)?
$(a)$ It was introduced into India as a contaminant with imported wheat.
$(b)$ It causes allergies.
$(c)$ Asexual reproduction occurs in its flower.