Back bumper paint problem
This morning I found some marks on my back bumper but don't know what they are. can someone help me how to fix it and how it may appeared please?

For those embracing, willingly or otherwise, a minimalist lifestyle, Mazda returns its bare-bones Mazda2 5-seat, 5-door compact hatchback to the 2014 small-family-oriented commuter-car wars. Essentially unchanged from 2013, this little (and it is little) mall-crawler again challenges Christmas shoppers with a relatively cramped 27.8 cubic feet of cargo area with the rear seats folded, but reviewers do tout it as a blast to drive. Trims, meantime, remain the base Sport and the slightly up-featured Touring.
Of course the Mazda2, which shares its platform with the Ford Fiesta (a result of the now-defunct Ford-Mazda partnership), remains available only with front-wheel drive (FWD) and still packs a 1.5-liter variable-valve-timed (VVT) inline 4-cylinder (I4) powerplant. The standard 5-speed manual transmission again manages the 4-banger’s 100 hp and 98 lb-ft of torque and can once more be exchanged for an outdated 4-speed automatic gearbox. This downsized hatchback may not beat anything off the line, but the latest iteration is touted to get 29 mpg city/35 highway with the stick-shift and 28/34 with the automatic, which lets one wave merrily at the green-light victors as they pull up to the gas pump on the next corner.
Meanwhile, the distinctly Spartan 2014 Mazda2 Sport again displays only 15-inch steel wheels outside, with cloth upholstery, full power accessories, tilt-wheel steering, simulated alloy interior accents, air conditioning and floor mats once more adorning the cabin. A single-CD player with 4 speakers and a USB port also remains standard.
The 2014 Mazda2 Touring trim adds 15-inch alloy wheels and a rear spoiler to jazz up its rather bland profile, while premium cloth upholstery, cruise control and a couple of extra speakers complete the ensemble.
Options once again include Bluetooth hands-free technology and an auto-dimming rear-view mirror with remote garage door opener, each available for either trim, while the Touring remains eligible for a few added exterior accent pieces.
Finally, the 2015 Mazda2 returns with such standard safety equipment as 4-wheel antilock brakes, traction and stability control, front and rear head airbags, and front side-mounted airbags, with the Touring again tossing in standard front fog/driving lights.
This morning I found some marks on my back bumper but don't know what they are. can someone help me how to fix it and how it may appeared please?
I'm selling my car in California and my registration is due this month. Will I need to get a smog check to transfer titles even if it's not showing as currently required?
2014 Mazda 2 sport. Can you somehow program the locks to auto like when you put it in drive?
Air Conditioning
Single front air conditioning zones
Airbags
Dual front airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Rear side curtain airbags
Audio System
Antenna Type: mast · Auxiliary audio input: jack · Single disc in-Dash CD · MP3 player: CD MP3 Playback · AM/FM radio · Total Number of Speakers: 4
Brakes
ABS: 4-wheel · Front brake diameter: 10.2 · Front brakes: ventilated disc · Rear brake diameter: 8.0 · Rear brakes: drum
Comfort Features
Center console trim: simulated alloy · Floor Mat Material: carpet · Floor Mats: front · Parking brake trim: urethane · Steering wheel trim: urethane
Convenience Features
Assist handle: passenger side · Center console: with lighting · Cupholders: front · Multi-function remote: trunk release · One-touch windows: 1 · Power outlet(s): 12V · Reading lights: front · Steering wheel: tilt-adjustable · Storage: door pockets · Vanity mirrors: dual
Drivetrain
Axle ratio: 4.15
Engine
Alternator: 90 amps
Exterior Features
Door handle color: body-color · Front bumper color: body-color · Grille color: body-color · Mirror color: body-color · Rear bumper color: body-color · Rear trunk/liftgate: liftgate · Window trim: black
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 2
Instrumentation
Warnings and reminders: low fuel level
Lights
Headlights: Halogen
Mirrors
Exterior mirrors: power · Inside rearview mirror: manual day/night
Rear Seats
Type: 60-40 split bench
Safety
Child seat anchors: LATCH system
Seatbelts
Front seatbelts: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front · Seatbelt warning sensor: driver and passenger · Second row seatbelts: 3-point
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Passenger seat manual adjustments: height · Rear headrests: adjustable · Rear seat folding: split · Upholstery: cloth
Spare Tire
Mount Location: inside · Size: temporary
Spare Wheel
Rim Type: steel
Steering
Steering ratio: 15 · Turns lock-to-lock: 2.7
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: semi-independent · Rear Suspension Type: torsion bar · Stabilizer bar(s): front
Tires
Type: all season
Tires and Rims
Wheels: steel
Wheels
Wheel covers: full
Windows
Front wipers: intermittent · Liftgate window: fixed · Rear wiper: intermittent
Air Conditioning
Single front air conditioning zones
Airbags
Dual front airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Rear side curtain airbags
Audio System
Antenna Type: mast · Auxiliary audio input: jack · Single disc in-Dash CD · MP3 player: CD MP3 Playback · AM/FM radio · Total Number of Speakers: 6
Brakes
ABS: 4-wheel · Front brake diameter: 10.2 · Front brakes: ventilated disc · Rear brake diameter: 8.0 · Rear brakes: drum
Comfort Features
Center console trim: simulated alloy · Door trim: cloth · Floor Mat Material: carpet · Floor Mats: front · Parking brake trim: urethane · Steering wheel trim: leather
Convenience Features
Assist handle: passenger side · Center console: front console with storage · Cupholders: rear · Multi-function remote: keyless entry · One-touch windows: 1 · Power outlet(s): 12V · Reading lights: front · Steering wheel: tilt-adjustable · Steering wheel mounted controls: cruise controls · Storage: door pockets · Vanity mirrors: dual
Drivetrain
Axle ratio: 3.85
Engine
Alternator: 90 amps
Exterior Features
Door handle color: body-color · Exhaust tip color: chrome · Front bumper color: body-color · Grille color: body-color · Mirror color: body-color · Rear bumper color: body-color · Rear spoiler: roofline spoiler · Rear spoiler color: body-color · Rear trunk/liftgate: liftgate · Window trim: black
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 2
Instrumentation
Fuel economy display: range · Warnings and reminders: low fuel level
Lights
Headlights: Halogen
Mirrors
Exterior mirrors: power · Inside rearview mirror: manual day/night
Rear Seats
Type: 60-40 split bench
Safety
Child seat anchors: LATCH system
Seatbelts
Front seatbelts: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front · Seatbelt warning sensor: driver and passenger · Second row seatbelts: 3-point
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Passenger seat manual adjustments: height · Rear headrests: adjustable · Rear seat folding: split · Upholstery: cloth
Spare Tire
Mount Location: inside · Size: temporary
Spare Wheel
Rim Type: steel
Steering
Steering ratio: 15 · Turns lock-to-lock: 2.7
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: semi-independent · Rear Suspension Type: torsion bar · Stabilizer bar(s): front
Tires
Type: all season
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent · Liftgate window: fixed · Rear wiper: with washer