Is September concrete or abstract

What happens when both hemispheres receive the same amount of sunlight? Can you put bread in the fridge to mold? What is my birth stone if i was born in August? How many OZ equal 600cc? What does photosynthesis get? What happens to heated particles inside of a solid? What are some examples of filters used in your everyday lives? Who was Stephen hawking's roommate at Oxford? What is controlled combustion? What is the formula for manganese carbonate? Can eukaryotes reproduce o replicate? Which is better to maintian pure culture in an agar slant or in a nutrient broth? What is the circulation of tropical air? Where you can find a GPS for your toddler? Will there be a comet or asteroid that comes close to the earth in 2036? What do atoms of the same element have the same number of? What is the latitude and longitude of gulf of Mexico? What will happen when everybody dies on the Earth? What are these specialized parts called? How is malachite formed?