Question

Question #fee0d

Answer 1

Predator-prey interaction

Explanation:

Predators respond numerically to changing prey density. In natüre, everything is a dependent. Predators depend on prey. If prey is in good quantity, predators are in a good condition. Stable ecosystems contain both predators and preys in optimum amounts. Otherwise, natural balance worsens.

Per capita rate of predation (the number of prey eaten during a given period of search time, `T_s`) can be expressed with:

`N_e`=`(c*N_(prey))*T_s`

where,
c is efficiency of predation
`N_(prey)` is density of prey
and `T_s` is period of search time.

(first introduced by (Solomon, 1949) cited by Smith and Smith, 2009).

Reference:
Smith, T. M. and Smith, R. L.. Elements of Ecology. (7th Edition). Pearson International Education, Benjamin Cummins, San Francisco, CA, USA.