True or False? Only some of our human needs (food, materials, etc.) come from natural resources. *

true or false

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

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from