Use the word 'many' if the object is countable (no matter how larger the number) and treat the noun as a plural. "There are many creatures in the ocean." Use the word 'much' if the object is measurable but not countable and treat the noun as singular.
Thereof, is some or are some?
With plural countable nouns we can either give the quantity (“five people”) or use “some” if we don't know the exact quantity. With uncountable nouns we also use “some”. “There's some milk in the fridge,” (I don't know the exact quantity.) “There's some money in my wallet.” (I don't know exactly how much money.)
Which is correct there is a lot or there are a lot?
"There ARE a lot of animals" is incorrect. "Lot" is the subject of the sentence and it is singular. "Is" goes with a singular subject, "are" goes with a plural subject. "There ARE lots" is correct because the subject "LOTS" is plural.
Does is singular or plural?
'Do' is used with all plural nouns, in the first person singular, second person singular and plural and third person plural. For example: People do work on a jobsite. It is used with the pronouns 'I', 'You', 'We' and 'They'.
Are a lot of or is a lot of?
We can therefore have either “are a lot of” or “is a lot of” depending on the noun. Mostly, we will use “There are a lot of” with countable nouns, when we discuss plurals, and “There is a lot of” with uncountable nouns.