Yes, of course endangered animals need our protection because we are the only ones who can save them from being extinct, by saving their natural habitat from destruction , by avoiding illegal poaching of animals for their hides, skins, tusks, meat ect. we can plant more and more trees for their habitat . by preparing funds ( like WWF ,i,e, World Wide Fund For Nature) for the protection of the endangered species.
The rule about subjects joined by 'and' is that there must be a subject-verb agreement. This means that if the subject is singular, then the verb must be also singular. On the other hand, if the subject is plural that means the verb must also be plural.
Answer:
it means full of information