A proper habitat and Preferences different specialized niches
Answer:
I think she should try the experiment one set with fertilizer, and one without. The negative control group would be the set of rose bushes grown without the fertilizer, but under the exact same conditions as the experimental group. Then, if a difference is seen you can be sure it's accurate, since you tested with and without fertilizer under the same conditions. Sorry if i am wrong, I am not completly sure about this one. Again I might be wrong so sorry in advance.
What is the second question? If it is in a picture I cannot see it, just comment the question below and I'll see if I can help you :3
Answer:
protects coastlines from storms and erosion
they are a source of food and new medicines
Explanation:
i asked my alexa
