The study of the internal structure of living organisms is called Anatomy, so it is the branch of Biology. Another name of Anatomy is Morphology.
anatomy is the structure of animals or plants
The phenomenon of buoyancy would be classified under the category of hydraulics.
Batteries come under Chemistry, which is a subset of Physics.
It falls under physics along with gravity.
The motion of a basketball falls under the heading of kinematics.
I dont know u tell me
The study of rocks belongs under the geology branch of science.
gas
This is not a branch of agriculture but a branch of medial science.
Geography
Earth science
Rheumatology.
It falls under Marine Science since ichthyology is the study of fish.
The study of insects.
physical and biological
Organic chemistry
There is no particular branch which deals with extinction, but it would fall under zoology,
It usually falls under Climatology.