The answers are:
a. physical geography
b. human geography
Geography is divided into two main branches, physical geography, and human geography, and after that, they branch out much more and include the other geographical disciplines in them.
Physical geography is mainly concerned with the study of the natural characteristics of the Earth, both the ones on the surface and the once close to the surface.
Human geography is mainly focused on the study of the human race, the background, perceptions, interactions, organizing, human groups, effects on and from the environment etc.
The correct answer is The rotation of the Earth
Explanation:
Besides orbiting around the Sun which leads to seasons, Earth is all the time rotation on its axis, this movement occurs eastward and the movement is completed every 24 hours, due to this, a day is considered to last 24 hours. Besides this, due to the rotation of Earth different zones or areas in the planet are directly exposed to the sunlight during different periods, which leads to daytime and nighttime, considering daytime as the period in which a zone is illuminated by the Sun while in the nighttime the zone remains in the dark. Additionally, this phenomenon also explains why daytime and nighttime do not occur at the same time on all Earth. Thus, it is the rotation of the Earth the one that causes Earth to experience daytime and nighttime.
This a IT tech term for internet approach ment
Weathering agents would be the correct answer.