the orbit
The length of a day would increase and the number days in a year would decrease.
The length of the day
The days would be longer
None (that we know of).
Earths rotation around its axis
The length of a day would increase and the number days in a year would decrease.
The length of the day
When the earth spins the seasons change
By slowing down the earths rotation but will not make effect to humans .
rotation
24 hours rotation
As the earth rotates the angle if the sunlight changes which affects shadows.
That's "rotation".
The days would be longer
Not only the earth's rotation , the lunar phases change cyclically as the Moon orbits the Earth, according to the changing positions of the Moon and Sun relative to the Earth.
because of the earths rotation
coriolis effect