The growth of the organism is said to take place when it grows in size however during this growth phase there is no change in the shape of the organism.
During the growth of the organism, there is an increase in size and mass and this takes place in both unicellular and multicellular organisms.
In unicellularorganisms, the growth takes place in the form of an increase in cellular content and the growth in multicellularorganisms takes place by an increase in the number of cells.
There would be an increase in "Zebra" and "Gazelle" population. This is due to the fact that there wouldn't be as many lions to eat the zebras and gazelles, causing their repopulation to become more frequent.