Mathematics.
"Bio" means 'life'. Therefore, Biology is the study of life. If specific to animals=zoology, if specific to plants=botany, etc.
Mathematics is a branch of science in its own right.
Physical Science generally consists of Physics and Chemistry (and arguably other, more specific sciences such as Material Science, etc.). Physical Science is a part of Natural Science (the science(s) which study nature).
This branch is termed forensic science.
Biology IS a branch of science.
Ethics is a branch of philosophy, not a branch of science (although scientists can still strive to be ethical).
it is excatly not the branch of earth science, but lots of concept used in earth science are of physics.
Natural science.
lif science
Biology.
its earth science
natural science