Which type of cell division only occurs in organisms whose cells contain chromosomes? a. duplication b. meiosis c. mitosis d. replication

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar

Which organisms udergo photosynthesis