Food webs are generally better than food chains because they account for multiple feeding interactions between species. 

Competition for resources between members of the same species is called ____________________. 

The maximum population size that a particular environment can sustain is called the ________________________. 

In order to sample population size and density for very small or slow moving organisms, _______________ is most often used. 

Factors in which the density of the population affects growth rate and mortality are called density-dependent factors.   

The interacting populations occupying a given habitat form a 

The statistical study of population changes over time, including birth rates, death rates, and life expectancies, is called ________________. 

Wetland plants that are rooted in the soil but have portions extending above the water’s surface are called 

The human population as a whole is currently experiencing logistic growth.  

Match the marine zone to the characteristic.