More than 1000 different species of cichlid fish live in Lake Malawi in Africa. Scientists studied sediment records from the lake. They found that the water levels dropped more than 200 meters around 24 times. Which of the following is the best example of how a water level drop could have contributed to the evolution of new species? A:The fish had to adapt to a lack of oxygen.

B:The fish had to adapt to changes in the air.

C:The fish had to adapt to changes in water pH and salt levels.

D:The fish had to adapt to the sediment in the lake bed.

stupid i wont let you get a chance

explanation:

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

idk what the question is about

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa