You find the stem by dropping the -ae ending from which case form of terra?

1.   ?    genitive singular
2.   ?    dative singular
3.   ?    nominative plural

How can you tell the difference between the nominative and the ablative singular of the first declension?

1.   ?    The ablative singular has a completely different appearance than the nominative singular.
2.   ?    The nominative singular form of first declension nouns has a macron over the final 'a' of the word, while the ablative singular does not.
3.   ?    The ablative singular form of first declension nouns has a macron over the final 'a' of the word, while the nominative singular does not.

How can you tell to what declension a noun belongs?

1.   ?    By the ending in the nominative singular
2.   ?    By the ending in the genitive plural
3.   ?    By the ending in the genitive singular
4.   ?    By the ending in the ablative singular
5.   ?    By the ending in the dative singular

All first declension nouns end in these letters

1.   ?    i
2.   ?    ae
3.   ?    is
4.   ?    ei
5.   ?    us

How can you find the stem of a Latin noun?

1.   ?    By dripping the 'am' from the accusative singular form of the word.
2.   ?    By dropping the '-ae' from the genitive singular form of the word.
3.   ?    By dropping the 'ae' from the dative singular form of the word.
4.   ?    By dropping the '-a' from the nominative singular form of the word.