An environment has a carrying capacity of 250 for species a, and a carrying capacity of 400 for species b. the rate of growth for species a is 0.2, and the competitive effect of species b on species a is 0.25. the current population size of species a is 105 while species b has a population size of 135. what is the change in population size of species a in the next generation

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.