1. True- because scientific theory means that <span>idea supported through research that attempts to explain existing observations or predict new ones.</span>2. False- because a cross-sectional means that its a study that is about different groups.
3. B-<span>An extraneous variable clarifies the relationship between the independent and dependent variables.</span>
I would say A because there are different things in our economy that effect our gas prices. Therefore, it’s a cause and effect situation.
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Explanation:The simple squamous epithelium formed by type I alveolar cells is attached to a thin, elastic basement membrane. This epithelium is extremely thin and borders the endothelial membrane of capillaries. Taken together, the alveoli and capillary membranes form a respiratory membrane that is approximately 0.5 mm thick.
A higher resting heart rate means that your metabolism is higher (you burn more calories resting than the average person). This is the opposite for a slower resting heart rate, which means your metabolism is lower and less calories are burned resting.
