Theory can be changed based on new research but law is backed up with immense info and is has not been broken once
Microhabitats are a small scaled environment with all biotic and abiotic factors needed to support its limited variety of organisms in an area.
A control group of the experiment is the one in which no treatment or intervention is given. So, in your case, the pea plants in which was not subjected any of the fertilizers, will serve as a control group. This is a negative control. A positive control group is the one in which an established treatment is given, which definitely leads to the production of the desired character. So, in your case, a very good well-known fertilizer which has a positive control on the growth of the pea plant, would serve as a positive control.
2. High birth rate, zero death rate, high immigration, zero emigration
This is because birth rate and immigration increase population size, and death rate and emigration decrease population size, so maximizing the former and minimizing the latter are ideal
Blue would be the hottest. And red would be considered the coolest.
