Final answer:
Zebras keep water in their bodies through their kidneys and digestive system. The growth of zebra populations is influenced by factors such as food availability and predation. Disturbances like fires and predators can affect the number of mammal species in African grasslands.
Step-by-step explanation:
One way that zebras keep water in their bodies is through their efficient kidneys which concentrate their urine and reduce water loss. They also have specialized adaptations in their digestive system to extract as much water as possible from the food they eat. For example, their large intestines have a long retention time, allowing for more water absorption.
The growth of a zebra population is influenced by several factors. These include the availability of food and water, the presence of predators, disease, and competition for resources within the population. When these factors are favorable, such as abundant food and water and low predation, zebra populations can increase in size.
A disturbance, like a fire or predator, can affect the number of mammal species in African grasslands. Fires can alter the habitat by destroying vegetation and reducing food availability. This can result in a decrease in the population size of certain mammal species that rely on specific plants for food. Predators can also have an impact on mammal populations by preying on individuals and reducing their numbers.