Noun. 1. continental divide-the watershed of a continent (especially the watershed of North America formed by a series of mountain ridges extending from Alaska to Mexico). water parting, watershed, divide-a ridge of land that separates two adjacent river systems.. a divide separating river systems that flow to opposite sides of a continent. 2. (caps. ) Also called Great Divide. the watershed in North America formed by the Rocky Mountains, separating streams flowing west from those flowing east.
life science. Any of several branches of science, such as biology, medicine, or ecology, that studies living organisms and their organization, life processes, and relationships to each other and their environment.. Any of several branches of science, such as microbiology, zoology, botany, or ecology, that deal with living organisms and their organization, life processes, and relationships to each other and their environment. Also called bioscience.
Life Sciences Life sciences Specializations and courses explore properties of organisms and living ecosystems, with subtopics including biology, nutrition, zoology, and healthcare. Courses in this field will improve your understanding of animal and plant life, and your ability to analyze how complex systems interact with each other and respond to change.