Which of the following is a density-independent factor?
a.

disease
b.

predation
c.

natural disasters
d.

stress

The answer is; C

Natural disasters occur independently of whether a population is densely populated or sparsely populated. The other options are dependent on population density. The higher the population, the higher the stress levels due to increased competition for resources. Disease also spreads rapidly in dense populations than sparse populations. Rate of predation also depends on densities of predator and prey populations.    

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

yes

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