By definition it is one that serves as a model or example
You may be talking about change from rapid-acting insulin to intermediate-acting insulin. Rapid acting insulin, as it implies, has onset of 10 to 30 minutes and peaks in 3 hours. Meanwhile, the intermediate-acting insulin takes 1 hour and 30 minutes to 4 hours to take effect, and it peaks in 4 to 12 hours. If changing from rapid-acting to intermediate-acting, there is a big space where there might be no insulin in the body to control blood sugar levels. As a nurse, you should carefully monitor blood glucose levels every 30 minutes and watch out for symptoms of hypeglycemia.
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It is likely that the lizards that live isolated from the rest (maybe in the farthest island) have more chances to survive because the disease needs to enter into the lizard's habitat to attack these populations. However, it is important to note that we need to know which is the cause of this disease in order to establish a working hypothesis.
Im not sure but ill try to explain. Guard Cells are like when u have prisoners or so in prison and stomata is a guard prison cell thing