New immunization requirements for schools in Ohio will start with the 2016/2017 school year. acellular pertussis) vaccine. Students entering 12th grade will need to have a second dose of meningococcal vaccine. dose must be administered on or after the 16th birthday.
Altricial, meaning requiring nourishment, refers to a pattern of growth and development in organisms which are incapable of moving around on their own soon after hatching or being born.
Altruism. 1  In evolutionary biology, altruism is defined as behavior that benefits other organisms but has some costs. 2  The costs and benefits are measured in terms of reproductive fitness (i.e. expected number of offspring). In evolutionary biology, altruism is defined as behavior that benefits other organisms but has some costs.