The answer is c mediastinum
<span>Some of the plants that made up coal were various ferns, and trees that no longer exist, like the lepidodendron, which was a scaly trunk with no limbs. Calamites, which are similar to the horsetail plant seen today. Seed ferns and glossopterids, also now extinct, were a basis for coal composition.</span>
The correct answer is C. To reduce the use of artificial pesticides, reduce costs, and control pests.
Explanation
Integrated pest management (IPM) is a method that integrates different practices and scientific principles to make adequate management with pests. This method considers knowledge about the habits, life cycle, needs, and aversions of the pest, reducing the use of toxic methods and implementing less toxic methods, monitoring pest activity and adjusting methods over time, tolerating harmless pests, setting a threshold to decide when it is time to act, among others as its main principles. Therefore, the correct answer is C. To reduce the use of artificial pesticides, reduce costs, and control pests.
Student 2 has seen the most bio-diversity.
This is because all the others see animals of the same species.
As for the other parts of your question, I don't think I can help too much with that.
