Reforestation projects, where only one species is planted in an area, result in.. 1. the likelihood of an unsustainable ecosystems.
2. limited biodiversity.
3. a population at increased risk of disease or insect invasion.
4. all of the above
Multiple choice

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.