Well, Godess, that's not a simple question, and it doesn't have a simple answer.
When the switch is closed . . .
"Conventional current" flows out of the ' + ' of the battery, through R₁ , then through R₂ , then through R₃ . It piles up on the right-hand side of the capacitor (C). It repels the ' + ' charges on the left side of 'C', and those flow into the ' - ' side of the battery. So the flow of current through this series circuit is completely clockwise, around toward the right.
That's the way the first experimenters pictured it, that's the way we still handle it on paper, and that's the way our ammeters display it.
BUT . . .
About 100 years after we thought that we completely understand electricity, we discovered that the little tiny things that really move through a wire, and really carry the electric charge, are the electrons, and they carry NEGATIVE charge. This turned our whole picture upside down.
But we never changed the picture ! We still do all of our work in terms of 'conventional current'. But the PHYSICAL current ... the actual motion of charge in the wire ... is all exactly the other way around.
In your drawing ... When the switch is closed, electrons flow out of the ' - ' terminal on the bottom of the battery, and pile up on the left plate of the 'C'. They repel electrons off of the right-side of 'C', and those then flow through R₃ , then through R₂ , then through R₁ , and finally into the ' + ' terminal on top of the battery.
Those are the directions of 'conventional' current and 'physical' current in all circuits.
In the circuit of YOUR picture that you attached, there's more to the story:
Battery current can't flow through a capacitor. Current flows only until charges are piled up on the two sides of 'C' facing each other, and then it stops.
Wait a few seconds after you close the switch in the picture, and there is no longer any current in the loop.
To be very specific and technical about it . . .
-- The instant you close the switch, the current is
(battery voltage) / (R₁ + R₂ + R₃) amperes
but it immediately starts to decrease.
-- Every (C)/((R₁ + R₂ + R₃) seconds after that, the current is
Substances that cannot be broken down into other substances are called elements.
Explanation:
Elements are pure substances that cannot be broken down into other elements through any non-nuclear means. For example: hydrogen, helium, lithium, beryllium, boron, and carbon.
A list of the elements can be found in a periodic table.