L2 ch 1 cont

L2 ch 1 cont - c. Cells d. Tissues e. Organs f. Organism 1...

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Lecture 2—Ch-1 continued Diversity and Unity 1. Overview -95% of all animals are invertebrates -900,000 species are insects -insects, spiders, mites, ticks (arachnids), centipedes/millipedes (chilopods & diplopods), shrimp, lobster, and crabs (crustaceans) are all anthropods, -one out of every four species of living organisms is a beetle -insects outnumber all organisms 9-1 2. Characteristics common to all forms of life: a. Cells and organization b. Energy use and metabolism c. Response to environmental changes d. Regulation and homeostasis e. Growth and development f. Reproduction g. Biological Evolution 3. Levels of organization: a. Atoms b. Molecules and macromolecules
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Unformatted text preview: c. Cells d. Tissues e. Organs f. Organism 1 Lecture 2Ch-1 continued g. Population h. Community i. Ecosystem j. Biosphere 4. Classification of living organisms: taxonomy (study of) a. The three Domain system: i. Bacteria-unicellular prokaryote (no nucleus) ii. Archaea unicellular prokaryote-live in extreme environments iii. Eukarya- unicellular to multicellular eukaryotes-4 kingdoms-protista, fungi, plantae, and animalia 5. Human impacts:-overfishing, hunting, gas emissions, carbon, deforestation, global warming, littering, breeding, pollution, coral reef bleaching, poaching, radiation, habitat destruction (#1) 2...
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L2 ch 1 cont - c. Cells d. Tissues e. Organs f. Organism 1...

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