(Please help) What is the correct definition of menstruation?

A. a doctor who specializes in female reproduction

B. a process for ovaries to release mature eggs

C. a joining of sperm and egg to form a fertilized egg

D. a breakdown in the lining of the uterus causing blood flow

What are 3 important public health tools for addressing flu outbreaks and why

Will treating a viral infection with antibiotics affect the course of the infection? a) no; antibiotics work by inhibiting enzymes specific to bacteria. antibiotics have no effect on eukaryotic or virally encoded enzymes. b) no; antibiotics do not kill viruses because viruses do not have dna or rna. c) yes; antibiotics activate the immune system, and this decreases the severity of the infection. d) yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.

Which practice is harmful to the land? a. using animal waste as fertilizer b. composting with peels from commercial fruit c. throwing paint cans in the garbage d. cutting the lawn with a gas-powered mower