Question

Which do scientists study to determine air temperature at the time it was formed? Select the two correct answers. (1 point)
Responses

fossilized pollen
fossilized pollen

chemical isotopes in foraminifera shells
chemical isotopes in foraminifera shells

tree rings
tree rings

ice formed thousands of years ago

Answer 1

The two correct answers that scientists study to determine air temperature at the time it was formed are:

1. **Chemical isotopes in foraminifera shells**
2. **Ice formed thousands of years ago**

These sources provide valuable information about past climate conditions and air temperatures.