limonene is a colourless liquid at room temperature with extremely strong smell of orange. it can be found in citrus fruit plant. it takes it name from the lemon, as the rind of the lemon, like other citrus fruits, contains considerable amount of this chemical compound, which is responsible for much of their smell.
limonene limonene
No.
d-limonene, aka (+)-limonene, was first identified in termpetine oil (0. Wallach and W. Brass, Liebigs Ann. Chem. 1884, 225, 291)
C4H16BR4. Limonene adds 4Br and the two double bond is broken.
Ozone is found naturally in stratosphere. It is found as ozone layer.
Hydrangea are plants, and are naturally found in the ground.
it is naturally found
Caffeine is naturally found in coffee.
it is a flavouring agent
Im not really sure about using volatile solvents to extract limonene in orange peelings, but you can use the maceration process which uses a neutral oil to release the natural oils in the peelings along with limonene and distill the oil produced to get limonene.
The wombat is only found naturally in Australia.
Plastic is a synthetic material. It is not found naturally anywhere.