How hard is it to choose what plants will survive on a scale of one to ten?

Question: How hard is it to choose what plants will survive on a scale of one to ten?
- Keywords:
  experiment,
  plant,
  research
Asked by to Liam, Kim, Jennifer, James on 18 Jun 2014. This question was also asked by .
- Jennifer Stephens answered on 18 Jun 2014:
  
  Hi sammyrane123
  It’s all down to the environment in which they are growing. At the moment, climate change is having a big impact on plant species throughout the world. For example, if you think about dry areas which don’t get much rainfall, plants like the cactus are able to survive because they can store lots of water (for years) and use that until the next rainfall. Plants that are more likely to survive drought (lack of water) will also do other things like closing their stomata during the day, or they may have a waxy layer on their leaves to prevent water loss.

Question: How hard is it to choose what plants will survive on a scale of one to ten?