Refer to the figure showing the stele of a buttercup root in cross section. 
When leaves are incubated in radioactive CO2, which tissue shown in the figure will accumulate the most radioactivity? Identify the tissue layer.
Definitions:
Children's Conceptions
Refers to the ways children understand and interpret the world around them, which evolves with age and experience.
Cultures
The shared values, beliefs, norms, customs, arts, history, folklore, and institutions of a group of people.
Adult Roles
The responsibilities, behaviors, and expectations associated with being an adult in society, including employment, parenthood, and community involvement.
United States
A country in North America consisting of 50 states and a federal district, known for its significant cultural and economic influence globally.
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