Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
다산성은 생태계의 건강을 나타내는 중요한 지표입니다.dasanseongeun saengtaegyeui geongang-eul natananeun jungyohan jipyoimnida.Reproductivity is an important indicator of the health of an ecosystem.