make a prediction about the effects that future human population growth will have on the following: Food production Available water supply Spreading of disease Natural resources Energy demands Global warming

Assuming that a population is not near the carrying capacity of its environment, what is likely to occur if the number of pre-reproductive and reproductive members of a population is greater than the number of postreproductive members? Othe population density will increase the population growth rate will decrease Cthe population will remain at the same density

Use the passage to answer the questions. Logistic Growth The carrying capacity of a population may be influenced by all except which This figure displays the equation for logistic population growth and of the following factors? visualizes population growth as a function of time (number of O A. availability of food generations) as it approaches carying capacity. N stands for population size, K stands for camrying capacity, and r stands for intrinsic rate of increase. O B. abiotic factors in the environment C. competition from other populations with similar resource requirements K= carrying capacity D. the population's intrinsic rate of increase (K-N) dN - rN dt K Number of generations rered MacBook Air 心. F7 F8 吕0 F3 F5 F6 F1 F2 $ % & * ! @ 2# 9 6 7 8 2 3 4 { P W E R T Y Q А S D F G C V B M alt ontion .... V • 元 I Population size ()

Crabs are a food source for the turtles who can use their strong jaws to crack their shells. 50 40 30 10 1990 1995 2000 2005 2010 2015 Time (year) 16. Based on the graph, what is the carrying capacity for crabs in the area being studied. Propose a reason that the population dropped in 2010. Number of Individuals (thousand) 20