The curve on the left shows the height of a rat population in 2007. the curve on the right shows the population in 2010. what type of selective pressure was taking place in this population?

There could be a change in the environment or there could be a change in what they are eating

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

it depends on how much it could carry.