How long does it take for humoral immunity to accomplish antibody production in the second exposure to the pathogen

Some plants have reproductive structures that them reproduce using natural forces or animals. how does the reproductive structure shown here ensure the reproductive success of plants?

Which term defines one's age as measured in years? chronological age biological age social age mental age

What is the longest you should ice the injured area at one time? a. 10-20 minutes b. 30-60 minutes c. 1-2 hours d. as long as you want