Which factors affect a river's load?
a.
river’s slope
c.
streambed shape
b.
volume of flow
d.
all of the above

d.

all of the above

Explanation:

A river load can be define as the debris or sediments carried away by the stream of river water. The materials which are translocated includes the rocks, stones and other large particles. Generally, the finer particles floats over the water surface. River slope, shape of the stream bed and volume of flow of water all are the factors which can affect the river load.

River slope will cause the erosion of surface materials by using water. Shape of the stream bed is also a factor this is because of the fact that the wider the surface covered by water more erosion can be caused. If the volume of water flowing in the stream is high the water will take away the particles by causing friction over the surface.

the atomic mass is the bottom number on the element.

-steel jelly

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.