Yes when leaves fall to the ground after a while they break down and end up into the soil.
fallen leaves decay and make the soil rich with organic matter
All the organic stuff, from worm poo to fallen leaves.
The tree's roots holds the soil and soaks up water to prevent soil erosion. Actually, it's the action of "soaking up water" that will cause soil erosion, just like too much water will cause soil erosion. The real answer to this question is really about the litter that the trees create that minimizes--not prevents--soil erosion. Soil erosion is also prevented in treeless areas like in natural grasslands where the same thing happens: the roots and litter layed down by dead plant material conserves and minimizes soil erosion.
Litter nourishes the soil with nutrients from dead leaves, dead grass, etc.CIARAN WAZ HERE
Trees affect the soil in a good way. They are an important part of erosion control. Tree roots bind the soil, while their leaves break the force of wind and rain on soil. They reduce water runoff and sediment deposit after storms, and conserve rainwater.
Macro-OrganismsExample-Bacilli
Microorganisms are found in soil and leaves.
the "O" horizon
fallen leaves decay and make the soil rich with organic matter
fallen leaves decay and make the soil rich with organic matter
Soil is composed of organic and inorganic parts. Inorganic is weathered rock. Organic is dead or decaying organisms called humus. Fallen leaves are part of what makes up humus. Fallen leaves (as well as all humus) are found in the "O" horizon as well as the "A" horizon.
sand, the gulf coast, rivers, and soil are some of the abiotic factors
As they decompose their nutrients are added back to the soil or are used by the organisms breaking the leaf down.
Macro-OrganismsExample-Bacilli
Listen, they stay alive forever. Falling leaves hit the ground and are gradually biodegraded by bacteria etc, and eventually form leaf mould, which helps enrich the soil. (That's if they are not swept up by the park keeper!)
This is really hard to figure out, but trees lose their leafs for Autumn. Or they might be dying...
macro-organisms example- bacilli