BasicStudents matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient)Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
AdvancedStudents matched to this level are ready for material that requires superior performance and mastery.
Without combustion the world would be very dark, let alone cold, place. Our civilization is based on combustion. Though gummy bears don't play a large role in everyday life, that doesn't mean we shouldn't take advantage of their combustability.
This indicates how strong in your memory this concept is