Your suggestion d) is the true answer from the options you've given above. Carbon skeletons can be in rings- as in cyclohexane, C6H12 or benzene, C6H6.
they always contain glucose or atoms of sugar
Always.
OH-
fossils
Electrons are arranged in a series of shells or orbitals that contain a specific number of electrons there are 4 types of shell which contain a different number of electrons. Electrons tend to be found in Paris spinning in opposite directions, but this is not always the case and is dependant on the number of electrons in the outer shell. all shells below the outer one will be full
Equations always contain an
Organic compounds always contain the element carbon.
Arranged marriages don't always work.
Arranged marriage are not always good. Most times the consent of the couple is not approved before the marriage.
A rock will always contain at least one mineral.
they always contain glucose or atoms of sugar
The liability accounts and expense accounts are the only ones arranged alphabetically.
it is a respectful characteristic of always keeping to an arranged time
Organic Compounds contain carbon, and almost always hydrogen.
They were often arranged in a circle or semi circle. the Chief's tepee was always on the highest ground. this provided him with a ideal veiw of his tribe.
A cellphone always contain a small CPU
Organic compounds contain carbon.