Leptin is a hormone that tends to reduce food intake. it is produced by what kind of cells?

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

When analyzing tree rings, what do scientists assume a thin ring indicates?

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)