Marine biologists are investigating the impact of rising sea temperatures on coral reefs. They hypothesize that coral species with lower thermal tolerance thresholds are at a greater ecological risk of local extinction. The table below shows the thermal tolerance threshold, measured as the sea surface temperature anomaly before severe bleaching occurs (TbleachT_{\text{bleach}}Tbleach. in ∘C^{\circ}\text{C}∘C), and the projected regional survival outlook for six common Indo-Pacific coral species.
| Coral Species | Thermal tolerance threshold (TbleachT_{\text{bleach}}Tbleach. in ∘C^{\circ}\text{C}∘C) | Regional survival outlook |
|---|---|---|
| Acropora hyacinthus | 1.101.101.10 | Critical |
| Pocillopora damicornis | 1.351.351.35 | Endangered |
| Stylophora pistillata | 1.601.601.60 | Vulnerable |
| Turbinaria mesenterina | 1.951.951.95 | Near threatened |
| Porites lutea | 2.152.152.15 | Vulnerable |
| Favia favus | 2.852.852.85 | Stable |
Describe the evidence in the table that supports the hypothesis that a lower thermal tolerance threshold is associated with a more severe regional survival outlook.
Identify one piece of evidence from the table that does not support the hypothesis that a lower thermal tolerance threshold is directly correlated with a higher risk level.
