Natural selection merged with the work of in the 20th century to open up our understanding of evolutionary theory. a. Alfred Russel Wallace b. Gregor Mendel c. Jean-Baptiste Lamarck d. Erasmus Darwin e. Charles Lyell

The correct answer is B) Gregor Mendel.

Explanation:

Gregor Johann Mendel was an 18th-century Genetic Scientist whose works, although revolutionary, didn't come to scientific limelight until the 20th century.

He was famous for his experiment with the Pea Plant. Through his experiments, he brought to record many of the rules of heredity also called the laws Mendelian inheritance.

Mendel died in 1884 aged 61, however, his work serves as the foundation for modern-day genetic science.

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mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. weight is the measure of the force of gravity on an objects's mass, while mass is the measure of how much matter there is in an object.