Charles Darwin and Jean-Baptiste de Lamarck both proposed theories to explain how populations change over time. Consider the statements below and indicate whether they are components of either or both theories. Natural theology is an acceptable alternative explanation in cases where evolutionary explanations are not yet available Darwin's theory Lamarck's theory O neither Darwin nor Lamarck's theory both Darwin and Lamarck's theory The main mechanism of evolution is natural selection Darwin's theory Lamarck's theory neither Darwin nor Lamarck's theory both Darwin and Lamarck's theory Species are fixed Darwin's theory Lamarck's theory neither Darwin nor Lamarck's theory both Darwin and Lamarck's theory The environment creates favorable characteristics on demand Darwin's theory Lamarck's theory O neither Darwin nor Lamarck's theory both Darwin and Lamarck's theory The interaction of organisms with their environment is important in the evolutionary process. Darwin's theory Lamarck's theory O neither Darwin nor Lamarck's theory both Darwin and Lamarck's theory