Question

1. a laboratory jar containing a population of fruit flies has reached a stable population size. we decided to add twice as much food per day to the jar, but the population size is unaffected. what is the most likely explanation for this? 9. list some abiotic (density - independent) factors that may cause population fluctuations. 10. the carrying capacity for a population is estimated at 500. the population size is currently 400 and r is 0.01. what is g?

Explanation:

1. Population at carrying - capacity, food addition has no effect. 9. Examples of abiotic density - independent factors are natural disasters, temperature extremes. 10. 'G' is population growth rate, calculated as G = rN(K - N)/K.

Answer:

1. Population is at carrying capacity.
2. Natural disasters, temperature extremes.
3. G = rN(K - N)/K