Answer:Enrico must multiply the distance of mars from sun (meters) with the
to convert the distance in astronomical units.
Explanation:
1 astronomical unit = 

Let the distance between the sun and Mars be Y( meters)
Distance in AU= 
Enrico must multiply the distance of mars from sun (meters) with the
to convert the distance in astronomical units.
Discrimination represent BEHAVIOR attitudinal component of prejudice.
Discrimination is always shown by the type of behaviors that are exhibited towards a certain group of people. For instance, after slavery had been abolished in America, some white employers still discriminated against black people by refusing to give them the same privileges that they give to white workers.
Biofuel, which is chemical energy taken from biodegraded material.
Answer:
I believe because it is made up of very small particles that it's texture is naturally rough and coarse. In addition, when having to get rid of sand from your foot or in your shoe, it is tedious and a bit difficult to get rid of it completely