Why are some organisms called as eurythermals and some others as stenothermals ?

Explanation

Biodiversity Impact Assessment can be defined as a decision supporting tool to help biodiversity inclusive of development, planning and implementation. Assessment can be done by:
(i)Change in land use and cover.
(ii) Fragmentation and isolation.
(iii) Extraction
(iv) External internal inputs such as emissions, effluents and chemicals.
(v) Introduction of invasive, alien or genetically modified species.
(vi) impact on endemic and threatened flora and fauna.