Cars are powered by fossil fuels, which come from the remains of ancient living things that were buried and exposed to high temperature and pressure from Earth's interior. Which spheres are represented when fossil fuels form

the idealization of the rural landscape ; admiration for the beauty of nature ; focus on an individual's inner concerns

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

missouri compromise of 1820 which prohibited slavery