BIOLOGY 1B Lecture Notes - Lecture 11: Tsar, Extinction Vortex, Inbreeding Depression
Document Summary
The beaches and oceans of the world are laced with chemicals and plastics that have a massive impact on marine organisms and ecosystem health. Ocean currents gather floating debris into massive garbage gyres. At least two major garbage patches exist in the pacific ocean, and there is another in the north. A few of today"s wealthiest entrepreneurs (musk, bezos) are keenly interested in space exploration. For many humans, the need to explore space is related to the perceived inadequacy of our home planet. Space junk is a problem of international significance. Exploded satellites and spent rocket stages have created countless small objects that orbit the earth at high speeds. Collisions of these objects with spacecraft can be devastating. The human population is most numerous along ocean coasts and near estuaries and along productive rivers and on fertile prairies. We are high on rugged mountains, circling the poles, and partying in the deserts.
