Explain the limiting factors that control population growth

Competition - when space is full pack organisms compete for resources and the sooner the resources are gone. Predation - organisms feed on and kill animals lowering their population growth and the prey population growth, same as herbivore and human prey. Disease - again feeds on hosts. Stress from overcrowding - females could kill offspring. Hurricanes (density-independent limiting factors).

with pass cost = $25

without pass cost = 3x number of days going the the class

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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