Compléter Scientific TermsVersion en ligne Select the correct word and expand your science vocabulary. par Légende X 1 extinct hidden alive sleeping endangered invisible When a species disappears completely and no longer exists , it is called . 2 Extinction Evolution Mutation Revolution Stagnation Conservation is the process by which species change over time through natural selection . 3 environment evolution organism adaptation ecosystem anomaly An is a community of plants , animals , and their environment all working together . 4 protector naturalist deforester developer farmer conservationist A person who works to protect and preserve natural environments and wildlife is known as a . 5 anthropology ecology biology chemistry genetics anatomy The study of how traits are passed from parents to offspring is called . 6 DNA RNA Bacteria Oxygen Enzyme Protein is the molecule that carries genetic instructions for life and stands for Deoxyribonucleic Acid . 7 CAT scan MRI CRISPR PCR Photosynthesis Microscope is a powerful tool used by scientists for editing genomes , allowing them to alter DNA sequences . 8 nerve stem atom virus red blood organ A cell is a special type of cell that can grow into different parts of the body , like skin or bone .