biologist – n. a scientist who studies the life processes of animals, plants etc.

species – n. a particular group of living things that belong together or have some shared quality

sperm – n. a cell that is produced by the male sexual organs and that combines with the female's egg in reproduction

stem cell – n. a simple cell in the body that is able to develop into any one of various kinds of cells (such as blood cells, skin cells, etc.)

diversity – n. the condition of having or being composed of differing elements

museum – n. a building in which interesting and valuable things (such as paintings and sculptures or scientific or historical objects) are collected and shown to the public