
All Solutions
Page 185: Review
a. When species alter the environment, they change it in such a way that would help them to adapt to it easier.
b. It adds complexity to the environment and enables more species to live in it. This event causes the species diversity to increase.
The factors that affect the paths of a secondary succession includes the following: the type of disturbance, the season when the disturbance occurs, and other human activities, such as deforestation.
However, taking the antibiotics for several weeks has exposed the bacteria to weak or non-lethal quantities of the drug. Due to natural selection, a succession took place. The next generation evolved and developed defenses that would make them resistant to the drug. As a result, a progressive bacterial growth and a more severe infection usually take place.
The evidence that would support the doctor’s claim would include the recurrence of the same kind of bacteria in the patient’s gut, In addition, one possible evidence is the low count of good bacteria that fight bacterial infection, which indicates an unfavorable change in the microbiome of the patient’s gut.