Researchers in Puerto Rico found that in urban habitats, crested anole lizards have more scales on their toes and larger toepads that help them grip surfaces compared with anoles in the native forest habitat. The researchers estimated that this anole population had been exposed to urban environments for 30–40 years, which corresponds to 100 or more lizard generations. What hypothesis might explain this observation?

The hypothesis that might explain this observation is that anoles, as a result of the slickness of walls and windows, are evolving adaptive features to enable them to fast adapted to grip urban smooth surfaces which are quite different from surfaces of trees in their native forest habitat. Structures such as larger toepads and toes with more scales, are adaptive features they have evolved overtime from generation to generation, making them different from anoles found in native forest habitat.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.