<span>The study of how traits are inherited though the interaction of alleles is defined as genetics and it began in the 1850's. Gregor Mendel was the first scientist to study genetics. </span>
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Answer: Weathering is the breaking down of rocks and minerals on the surface of Earth. Weathering is divided into two types, mechanical and chemical.
Explanation: One of the causes for mechanical weathering is water, either liquid or solid. A cause for chemical weathering is rain water. Rain water reacts with mineral grains in rocks to form new minerals.