Meg researched the biodiversity in four water ecosystems. Which ecosystem likely has the highest biodiversity?

The correct answer is option 4. "Z".
Explanation:
A water ecosystem with high niche diversity and warm water temperatures will likely have a high biodiversity. High niche diversity refers to the presence of multiple traits in the same or different species, which is a characteristic of ecosystems with a high biodiversity. Additionally, a warm water temperature promote most species to reproduce, which also has a positive impact in biodiversity. However, temperatures above warm will affect biodiversity as oxygen is less soluble in hot waters and some species do not survive in this condition.

C14 dating since carbon is present in both living and no living objects .

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.