Most of the endangered species are the victims of

Discuss one example,based on your day-to-day observations,showing how the loss of one species may lead to the extinction of another.

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.

$Parthenium$ (carrot grass) that came into India has become ubiquitous in occurrence and causes pollen allergy.

Identify the incorrect match with respect to recently extinct animals and their place of extinction according to the $IUCN$ Red List.

What is the primary reason for the continuous decline in the population of wildlife?