bioligy Page 2

He did this by demonstrating that maggots did not appear in meat that was fully sealed from the air.

Rachel Carson changed the world by helping to start the modern environmental movement. She did this through her writing, most notably her book Silent Spring.

Mendel used the method of cross-pollination to produce offspring in his study of pea plants. This method involves transferring pollen from the male organ or stamen of one flower to the female organ or pistil of another.

James Watson and Francis Crick discovered the double helix structure of DNA in 1953, which allowed for a greater understanding of how DNA functions.

Rachel Carson was most passionate about the issue of pesticide use and its effects on the environment.

Gregor Mendel was an Austrian scientist who discovered the basic principles of heredity through experiments with pea plants.

Francesco Redi was an Italian physician and naturalist who is best known for his work on disproving spontaneous generation. In his experiments with meat, he showed that maggots could only form on meat that was already infested with fly eggs, disproving the theory that maggots could spontaneously generate from rotting meat.

In 1668, Francesco Redi disproved the theory of spontaneous generation by demonstrating that maggots come from fly eggs, and not from rotting meat. This is known as the Experimentum Crucis.