Which of the following statements best describes carrying capacity? a. carrying capacity is determined by a variety of environmental factors, and represents the approximate maximum population size in an environrment. b. carrying capacity can self-adjust depending in the size of the population, allowing for further growth. c. carrying capacity remains constant over time, regardless of changes to the environment. d. when a population reaches the carrying capacity of its environment, limiting factors cause it to decrease to near zero.

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.