B. Is correct because in mutualism both species benefit. It could be symbiosis but mutualism is more specific.
Answer:
Solar energy warms gases that make up air
Answer:
D.Duplicate halves of a chromosome
The Health Belief Model (HBM) is a psychological model that attempts to explain and predict health behaviors. This is done by focusing on the attitudes and beliefs of individuals. The HBM was first developed in the 1950s by social psychologists Hochbaum, Rosenstock and Kegels working in the U.S. Public Health Services