The roots of the grass may further widen the crack in the sidewalk as it grows, causing potential trip hazards. Additionally, as the grass grows, it can retain moisture which may lead to further deterioration of the sidewalk over time. If left unchecked, the grass can also make the sidewalk more slippery when wet.
Grass poking through a crack in a sidewalk is an example of secondary succession. This is because the sidewalk already existed, and the grass is growing after a disturbance (such as the cracking of the sidewalk) has occurred, allowing for new plant growth in the area.
Sidewalk, smoother surface.
A ball moves faster on a sidewalk than on grass because the surface of the sidewalk is smoother and provides less resistance. The grass surface is uneven and offers more friction, which slows down the ball's movement.
It is easier to pull a wagon on the sidewalk than on grass because the wheels of the wagon roll more smoothly on a hard, flat surface like the sidewalk, compared to the uneven and soft surface of the grass which creates more resistance. The sidewalk provides a stable and firm base for the wheels to move efficiently.
A ball would generally roll faster on a sidewalk than on carpet grass due to the smoother and harder surface of the sidewalk providing less friction and resistance. Carpet grass has a rougher texture that can slow down the ball's movement.
Is it Inertia
A lower albedo (reflectivity) in the sidewalk will cause it to absorb more solar radiation and heat up more than the grass, which reflects more sunlight. The concrete sidewalk has a higher heat capacity compared to grass, which also contributes to it being warmer.
example sentence: The gardener dug clumpsof grass from between the sidewalk slabs.
It is primary. I think
There's less friction over a smooth concrete sidewalk
A road verge is a strip of grass or plants located between a curb and a sidewalk. Other names for a road verge include verge, city grass, hellstrip, nature strip, planting strip, boulevard, parkway, and tree belt.