ENVS 1000 Lecture Notes - Lecture 2: Tidal Locking, Extremophile, Gas Giant

• School: York University
• Department: Environmental Studies
• Course: ENVS 1000
• Professor: Peter Timmerman

Document Summary

13. 7 billion years: hydrogen is fused together and there is a certain mass that creates helium and they bond. 4. 6 billions years - the earth began to form. 500 billion years life appears on earth. 530 billion years critters and animals came. 2. 5 billions years atmosphere becomes oxygen rich, but it is toxic and anaerobic bacteria die due to exposure of oxygen. Eukaryotes cells emerged from prokaryotes cells: (cid:862)eu(cid:863) = (cid:862)good(cid:863) + (cid:862)kar(cid:455)os(cid:863) = (cid:862)ker(cid:374)el(cid:863) Light speed, captain: moon 1 light second away. 8 minutes to the sun (93 million miles) Transforms energy flow to sustain itself: depends on a chemical element as its structural basis (carbon, silico(cid:374) et(cid:272). , water. 8 major milestones in the history of life on earth: cells (compartments, chromosomes, nucleic acids and proteins, endosymbiosis (functions combined, sexuality, multicellularity (separation of function, social organization, civilization (communication via. language) Pandora: circles around a gas giant (polyphemus) should be tidally locked, or subjected to huge gravitational waves.