All living things change over the course of a lifetime. this includes growth and , or all of the changes that occur between fertilization of an egg through the death of an organism.

Development

Explanation:

Development Fertilization includes the fusion of male and female gametes and forms zygote. All the events that occur during the lifetime of individuals from fertilization to the death together constitute "development". It takes into account how a diploid cell zygote divides repeatedly to form an embryo. Development also includes differentiation of cells into tissues, organogenesis, childbirth, and other growth-related phases that transform a newborn into an adult followed by aging and senescence.

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