Asthma prevalence is on the rise in Arizona. A recent cross-sectional study among a group of 160 grade school boys found that 64 per 100 (45 of 70) of grade school boys living near Speedway were asthmatic compared with 17 per 100 (15 of 90) who lived further. The researchers attributed this increase prevalence of Asthma to exposure to car exhaust by proximity to Speedway. The Relative Risk of Asthma for those exposed to Speedway is:a- (15/90) / (45/70) = 0.26b- (15/160) / (45/160) = 0.33c- (45/160) / (15/160) = 3d- (45/70) / (15/90) = 3.86e- There is not enough information to calculate this rate.

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens

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

Astudent completed a lab report. which correctly describes the difference between the “question” and “hypothesis” sections of her report? “question” states what she is asking, and “hypothesis” states the result of her experiment. “question” states what she is asking, and “hypothesis” states what she thinks the answer to that question is in “if . . then . . because” format. “question” describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. “question” describes what she is trying to find out, and “hypothesis” states any additional information or prior knowledge about the question.