What feature of this plant stops large animals from eating it?

What adaptations can prey use to avoid predation

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine