An ecosystem of 20 species has experienced four recent extinctions and scientists are curious about how ecosystem functions will be negatively impacted. Which labeled line shows a relationship in which the initial loss of biodiversity has minimal impact on ecosystem functioning (NPP)? NPP 2 4 6 8 A B C 10 12 Species richness 14 16 18 20

1) Compare the biodiversity indices to one another. State a claim about the effect of pollution on the biodiversity of the stream ecosystem. Describe how the pollution levels affect the species richness and biodiversity of the stream. Justify your claim with evidence. Describe the difference in species richness you observed. Explain how human intervention can change biodiversity in positive ways.

R T- Which one of the locations indicated is most likely to have the greatest biodiversity and ability to sustain the ecosystems located within the biome? A Location Q 29 B Location R C Location S D Location T

Which of the subsequent options is not included in the red list criteria for species classified as "critically endangered"? 1. The population is projected to decrease by 25% or more within a span of 3 years or 1 generation. 2. The species possesses a limited range of less than 100km2 in a solitary location, and there is evidence of or anticipated habitat loss, fragmentation, ecological imbalance, or significant commercial pollution. 3. The likelihood of extinction exceeds 50% within a timeframe of 10 years or 3 generations. 4. The overall population size consists of fewer than 200 mature individuals.