Answer:
- The impact gave acid rain, depending on rocks the asteroid struck.
- Impact hypotheses can only explain very rapid extinctions, since the dust clouds and possible sulphuric aerosols would wash out of the atmosphere.
- the K–Pg layer consistently show the excess of the iridium.
Step-by-step explanation:
- The meteorite impact and the extinction of the species at the cretaceous boundary are known as the K and T boundary and can be understood using the thin band of rocks. The evidence is given by the Alvarez hypothesis and the higher iridium on the earth's crust.