Look at these data. Beak depth, the distance from the top to the bottom of the beak, is controlled by the bird's genes. The bar chart shows the variation in beak size before a drought. The survival of birds after the drought
with a particular bill depth is shown by the yellow line. Explain how these data support the idea of natural
selection among the finches.

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.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.