Colorado has a vast population of lodgepole pines. a population of lodgepole pines have been killed in a section of the forest. what is a possible limiting factor of that population?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

What type of plant is good for a bioassay and where can i buy it? i only have a month.

What is it called when lava when it erupts from the surface through volcanoes.