The complete question is :
Which field of biology studies all aspects of biodiversity?
conservation biology
histology
geology
entomology
environmental science
Answer: Conservation Biology
Step-by-step explanation:
The conservation biology can be defined as a branch that is into management of nature and earth's biodiversity with the aim of protecting the organism( species) and their habitat, excessive destruction and erosion of biotic interactions.
This field is not a a single field it has multidisciplinary role in the nature which covers every aspects related to animals and plants.
hence, the correct answer is conservation biology.