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  • (a) How will you measure population density of fish in a lake? (b) In a pond there are 100 frogs. 20 more were born in a year.Calculate the birth rate of this population.    

(a) How will you measure population density of fish in a lake?

(b) In a pond there are 100 frogs. 20 more were born in a year.Calculate the birth rate of this population.

 

 

 

 
 
 
 
 

Answers (1)

a) The population density of a fish in a lake can be measured by the number of fish caught per trap in the lake.

b) Total frogs present in the pond = 100 frogs Number of frog births per year = 20
The birth rate of the population= Number of frog births per year/ Total population of frogs \frac{20}{100}= 0\cdot 2  offsprings per year.

Posted by

Priyanka Kumari

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