All of these animal behaviors are important. They help the animals get food for energy, make sure their young survive, or ensure that they, themselves, survive. Behaviors that help animals or their young survive, increase the animals’ fitness. Animals with higher fitness have a better chance of passing their genes on to the next generation. If genes control behaviors that increase fitness, the behaviors become more common in the species. This occurs through the process of evolution by natural selection.
Mark had been studying the lions in the area for several months. He had developed an appreciation for how much they cooperated with each other. They not only hunted together but they helped to look after each others cubs. Where as lions that did not belong to a pride had a much harder time.
are lions not in a pride more or less likely to pass their genes on