Which do scientists study to determine air temperature at the time it was formed? Select the two correct answers. (1 point)
Responses
ice formed thousands of years ago
ice formed thousands of years ago
chemical isotopes in foraminifera shells
chemical isotopes in foraminifera shells
fossilized pollen
fossilized pollen
tree rings
tree rings
The correct answers are:
- chemical isotopes in foraminifera shells
- tree rings