In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

the venue and year of earth summit on conservation of biodiversity was
3 to 14 June 1992

who led the metis in the rebellions at red river in 1870 and in the northwest in 1885
Louis Riel

why do leaflets of mimosa fold when touched

defending themselves from harm