Topic 1:Biological diversity Flashcards
all life on earth is related because
we all evolved from a common ancestor
Diversity of life on earth arose from…
through evolution
what are threats to biodiversity
-resource exploitation
-conversion of land
-pollution
-transport of species
-global climate change
these all cause habitat loss which affects the animals
whats the unifying theme of Biology
Evolution
what are theories , and how are they constructed
is an explanation/ observation of the natural world, they have been constructed using scientific method
How is science conducted
observation-> question
proximate questions
don’t require evolutionary explanation, it deals more with how this trait works
Ultimate questons
they deal with the evolutionary origin and the function of the trait
what comes after question in scientific method
after one makes an observation and come up with a question they generate a hypothesis
whats a Hypothesis
-is the POSSIBLE explanation for an observation
-needs to be knowledge based
-needs to be testable and falsifiable (to be testes, and proved wrong)
scientific method (its steps)
-uses deductive reasoning (meaning going form general to specific)
observation->question->hypothesis->prediction->hypothesis tested->conclusion (does it support or reject your hypothesis)
correlation vs. causation
the correlation between 2 factors down mean that change in one factor causes the other to do the same
ex. if bean growth decreased the same time of year fifa won, that doesn’t mean did caused beans to grow more.