Darwin studied actual birds on the galapagos islands instead of using a simulation, as you did in this lab. studying natural selection in the field can be challenging. list at least three possible challenges darwin might have faced.

What percentage of light hits earth's surface directly?

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)

Which law represents a balanced chemical equation?