Answer:
Plants and decoposers
Explanation:
Plants are vital organism because creates
photosynthesis to make sugar ( they can make
their own food ) and the start of the food chain.
Decomposers are vital organism since they break down dead plants and animals ( think as Earth's recyclers ).
That would be true because of momentum but the seat belt would slow this you would still hit the dash or a steering wheel's air bag system if it is equipped with one
See photo attached
Hope this sort of helps ʕ•ᴥ•ʔ