I hate white boys there so sickening like stop being so fen racist AND THIS IS COMING FROM A WHITE GIRL. Like I’m done there sickening and get all butt hurt when I date black guys.

Whic disease reduces bone density and causes the bones to become brittle

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein.b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid.c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane.d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.