Herd immunity fails when what percentage of the population is not vaccinated??

What would happen if you put ginger ale in your ear

Which of the following foods would be the best choice for someone who's lactose-intolerant?   a.  frozen yogurt    b.  strawberry sorbet    c.  cheesecake    d.  chocolate ice cream

Although animals share many common characteristics, there is also a great amount of diversity found in animals. which animals are ectothermic, obtain dissolved oxygen in water through gills, have scales, have fins, and live in water?