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Abiogenesis

A hypothesis that states that living things can originate from nonlliving matter (spontaneous generation).

Asexual Reproduction

Reproduction in which a single parent gives rise to one or more individuals.

Biogeneis

A hypothesis that living things come from other living things.

Cell

The basic unit of structure and function of an organism.

Digestion

The metabolic processes involved in breaking down food into simpler substances.

Environment

All the living and nonliving factors that surround an organism.

Extinction

The complete elimination of a group or organisms.

Growth

An increase in living mass.

Homeostasis

The balanced regulation of metabolic proesses to maintain the conditions needed for life.

Life Span

The length of an organism's life.

Metabolism

The sum of all the chemical activities carried out by a living thing.

Multicellular

Consisting of more than one cell.

Reproduction

The process by which new individuals are produced.

Respiration

The processes by which most cells obtain energy.

Response

A reaction of an organism to a stimulus.

Sexual Reproduction

Reproduction that involves the fusion of two specialized sex cells.

Spontaneous Generation

A hypothesis that states that living thing can orinate from nonliving matter (abiogensis).

Stimulus

A change that can cause a reaction.

Synthesis

The metabolic processes by which living things combine simple substances to form more complex substances.

Unicellular

Consisting of a single cell.

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