Question

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

tree rings
tree rings

fossilized pollen

Answer 1

To determine air temperature at the time it was formed, scientists study:

1. **Ice formed thousands of years ago** - Ice cores can provide valuable information about past temperatures and atmospheric conditions.

2. **Chemical isotopes in foraminifera shells** - These marine organisms can give insights into past ocean temperatures based on the chemical composition of their shells.

So the two correct answers are **ice formed thousands of years ago** and **chemical isotopes in foraminifera shells**.