The population is growing faster at 10 years than at 6 years. The growth rate is 0. The birth rate and the death rate are the same for 0-2 years meaning the population is not growing as the rate is 0. As the population becomes larger, less room is left in the environment and environmental pressures such as lack of food or space causes a reduction in fitness. This causes r, the rate of population growth to decrease.
Organisms have to be better adapted as population size increases.
These young organisms feed on the abundant algae that grows on the rocks of the pool. In this aquatic organism, death among the young is due to heavy predation until the young become too large to be trapped by the predator, a small fish. On the graph above, draw a line which would depict the cohort if the predatory fish were removed from the pond. In an ecology study of a dry desert area, the question has been posed that ants and mice are competators for the seed crop which is produced each spring during the spring rainy season. Ants are able to feed in the day time in the heat, but mice eat only at night to avoid the intense heat.