Reproduction - Animals grow in number in the process called ____________., sexually - All of these animals - butterflies, frogs, mosquitos, dogs, and cats reproduce ________., Sexual reproductions - The ______ _____________ takes place when sex cells from two-parent (one male and one female) unite., Internal Fertilization - Fertilization that occurs inside the body is called ________ ____________., External Fertilization - Fertilization that occurs outside the body is called ________ _____________.,

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