1. what is the usual cause of a harmful increase in the nutrients in a freshwater lake?
a. global warming
b. runoff of fertilizers and sewage
c. loss of biodiversity
d. seasonal variations in rainfall.

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half