Sarah has been eating and sleeping poorly. She was just diagnosed with pneumonia. Tests showed the illness was caused by Streptococcus pneumoniae. In the chain of transmission, Sarah is the , and Streptococcus pneumonia is the

The future for teen moms can be compromised due to the demands of parenting.

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?

The nutrient facts label on a food package lists the following: iron 50%. what does this figure indicate?