These KRs include loss of marine and coastal biodiversity and ecosystem services (high confidence) (KR1; for details on KR coverage, see Section 15.3.3.1); submergence of reef islands (low confidence) (KR2; Section 15.3.3.1.1); loss of terrestrial biodiversity and ecosystem services (high confidence) (KR3; Section 15.3.3.3); water insecurity (medium- high confidence) (KR4; Section 15.3.4.3); destruction of settlements and infrastructure (high confidence) (KR5; Section 15.3.4.1); degradation of human health and well-being (low confidence) (KR6; Section 15.3.4.2); economic decline and livelihood failure (high confidence) (KR7; Sections 15.3.4.4 and 15.3.4.5); and loss of cultural resources and heritage