<em>The cells are striated and multinucleated appearing as long, unbranched cylinders. </em>
It is true because cross-ventilation is (almost) required in order for the users safety.
Being well off financially is not a characteristic of healthy ageing. So the correct answer is i. being well off financially.
Healthy ageing is defined as living to a certain age, being free of chronic diseases, being independent in daily activities, feeling good about oneself, having a high level of social engagement, having only minimal cognitive or functional impairment, and having little to no handicap. Though being well off is important for sustaining healthy ageing it's not dependent on it.
The phrase "healthy ageing" is now often used and refers to a wide range of markers and predictors. According to Fernandez-Ballesteros et al., the concepts of active, healthy, successful, or productive ageing are all highly related and multidimensional concepts that refer to an ageing in a healthy way.
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The microscope was a very important scientific discovery that allowed scientists to more closely view cells and even microscopic organisms. Without the microscope there are many scientific discoveries that never could have been made.
