Wait i need a picture or document to answer this question srry.
Answer:
i think its a but im not completely sure
Explanation:
When an inducer or a possible effector molecule binds to the repressor protein, there is a conformational change within the repressor protein causing it to fall of the DNA sequence that it has bounded to.
This allows gene transcription to occur. As the RNA polymerase can access the promoter sequence for instance.
The demographic blow to Eurasian population that has as consequence effect on climate greater than deforestation, this hypothesis is based on the assumption that some events led to abrupt demographic changes that led to the abandonment of cultivated lands in which vegetation grew again and absorbed more carbon dioxide.
