I believe the answer is descriptive science
Descriptive research aim to produce a data that describe a condition. It doesn't trying to analyze the data and find correlation or causation. In this case, the scientist trying to make catalog of new species. The result should be a list that could describe the species of the species. There is no hypothesis or variable in this research.
Answer:
Examples of biotic factors are animals, birds, plants, fungi, and other similar organisms. Introduction In ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems
<u>Answer</u>: c. a and b
Trees play vital roles in the production of oxygen as well as the fixation of carbon from 
. As trees use nitrogen, phosphorus and water as nutrients for growth, their diminishing numbers would change the balance between these three elements significantly.
Thus, during rains, the water level will rise much faster and higher in the absence of trees. These could possibly lead to increasing cases of devastating landslides.
D. butterflies (they eat plants so they are a consumer)
Liquid water evaporates from lakes when heated by the sun.
