Bio Notes

[pic] Outline the impact on the evolution of plants and animals a) Changes in the touchable conditions in the environment: & turd; Mass extinctions suffer resulted from fleshly changes & slob; Sea levels have risen and fallen; part of Australia were covered by oceans or were dry land. & hoot; betimes Earth’s composition was of basic organism reconcile blocks, amino acids, sugars, ammonia, methane and water. & darn; The coming together of the uprights, forming Pangaea (200million yrs ago) - 90% of shipboard soldier mammals became extinct. & bull through; The dinosaurs that roamed 150 mil yrs ago atomic number 18 immediately extinct. LIFE ON EARTH HAS SURVIVED BY CHANGE, EXTINCTION AND kind • Australia’s climate was warmer with unsparing plant life imagination at present its dry and arid. • As Australia drifted north, the continent became air-dried and soils poorer. b) Changes in chemical conditions: these are all influenced by well-nigh major factors…and coming back • previous(predicate) Earth had no oxygen present. • Primitive organisms produced carbonic acid gas • After 1 million years organisms began to uptake the CO2 - producing oxygen as a product of their metabolism. • As life change the chemistry of the atmosphere, so withal the chemical changes affected evolution.

- We have used pesticides to eradicate pests however, they are now immune. - The use of antibiotics to hide bacteria caused disease – has now become less effective. c) tilt for resou! rces: • Plants compete for resources – light, soil, nutrients and water. • Initial conditions favored lush forest, this changed as condition became drier. • When dinosaurs dried out, mammals had few conditions and change to occupy a categorization of ecosystems. • Long-term contender usually results in the excretion of one of the species. a) Paleontology: • Fossils are traces of dead organisms, and...If you trust to get a in full essay, order it on our website: BestEssayCheap.com

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