A group of students are researching changes in climate in their region. Which of these would best provide evidence of changes in temperature and rainfall over a period of years?

OPTIONS:
- tree rings
- pollen samples
- harvest production
- carbon dating
tree rings
En grupp studenter forskar om klimatförändringar i sin region. Vilket av dessa skulle bäst ge bevis för förändringar i temperatur och nederbörd under en period av år? Alternativ: - trädringar - pollenprover - skördeproduktion - koldatering
A group of students are researching climate change in their region. Which of these would best provide evidence of changes in temperature and precipitation over a period of years? Options: - tree rings - pollen samples - harvest production - carbon dating
trädringar
tree rings