Question

You read above that crops can grow using less water when there is more CO2 in the air.  Use CER to formulate a possible explanation. (2 pts = Claim, 2 pts = Evidence, 2 pts Reasoning)***USE THE ARTICLE ABOVE WHEN PROVIDING EVIDENCE!!***

Answer 1

we are asked to use CER to formulate a possible explanation why crops can grow better when more CO₂ is available.

Answer

claim:

Atmospheric CO₂ is vital for the process of photosynthesis and so we can claim that an increase in CO₂ directly increases the rate of photosynthesis when other variables are unchanged. therefore we can claim that plants will grow better when more CO₂ is availble

Evidence:

experiemnts conducted in CO₂ enriched environments showed taht plants grow better in these condition suggesting that an increase in CO₂ directly links to a plant growth increase

Reasoning:

A possible reason for this is that CO₂ is used in the photosynthesis chemical reaction and so increasing the concentration of CO₂ should increase the rate of photosynnthesis and therefore increase the growth of the plant.