Given the principle of exclusion, which of these statements is true? Two species using the same limited resources cannot occupy the same niche in the same habitat at the same time.

Two species using the same limited resources can live harmoniously in the same habitat and niche without causing any competition.

Two species using the same limited resources in the same habitat and niche are always parasitic in relation to each other.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

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option a and d is the correct answer

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you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint