Leo S. Berg was a scientist who studied animals, plants, and rocks. He wanted to understand how they grew and evolved over time.
Imagine you have a garden in your backyard with different types of plants. Each plant has unique traits, like different leaves, flowers, and colors. Sometimes, when plants reproduce, they pass down these traits to their offspring, just like how you have some of your parents' traits, like eye color or hair texture. This is called inheritance.
Leo S. Berg noticed that animals and plants that lived in the same areas had similar traits. This made him think about how organisms adapt to their environment to survive. For example, a plant that grows in a dry area may have developed the ability to store water in its leaves, while a plant in a wet area may have larger leaves to absorb more sunlight.
Berg also studied rocks to understand how the Earth's surface was formed. He noticed that different layers of rock had different types of fossils, which helped him understand how life had changed over time.
In summary, Leo S. Berg studied how organisms inherit traits, adapt to their environment, and evolve over time. He also studied rocks to understand the history of life on Earth.