What was the main finding about the skin coloration of tree frogs near the Chernobyl power plant?

• Frogs closer to the power plant had darker skin due to higher melanin levels.

• Frogs closer to the power plant had lighter skin due to lower melanin levels.

• Frogs outside the exclusion zone had darker skin due to higher melanin levels.

• Frogs outside the exclusion zone had lighter skin due to lower melanin levels.

How does the concept of natural selection relate to the changes observed in the tree frogs' skin coloration near Chernobyl?

The Chernobyl disaster led to the largest release of ___ material in human history.

What role does melanin play in the survival of tree frogs in high radiation areas like Chernobyl?

The area around the Chernobyl nuclear power plant that people had to leave is known as the Chernobyl ___ Zone.