The valves of the heart and veins are similar in that they both prevent the backflow of blood act as propellers to move blood forward prevent blood from flowing too quickly are made of rigid cartilage

Type the correct answer in the box. spell the word correctly. which three categories of waste is savio promoting in his city? savio has been spreading awareness about the importance of proper waste disposal techniques. he has been visiting restaurants in his city and asking them to segregate waste into three categories, garbage, organics, and . so that it becomes easy to identify waste and treat them accordingly.

Which of the following human diseases is caused by a virus that requires reverse transcriptase to transcribe its genome inside the host cell? a) herpesb) aidsc) smallpoxd) influenza

Results from damage to tiny air sacs in the lungs