So the flowchart should go like this:
Mutation in the CFTR gene >>>>>> Production of defective CFTR protein >>>>>> defective CFTR protein in cell membrane or no protein at all >>>>>>> Impaired ion transport across the cells >>>>>>> Cells secrete less chloride >>>>>>> leads to more re-absorption of sodium and water into the cells >>>>>>> decreased hydration of mucus present outside the cells as more water is absorbed into the cells >>>>>>>> thick viscous mucus.
D because it would make it worse since significantly warmer areas are due to human activities
Explanation:
body cells- intake the nutrients and specialized into to carry function.
tissues- have similar structure to function well in body like, connective tissue, muscle
organs- carry different identity of function in body like, heart(to pump blood) kidney( for filter and excrete wastes
New germs are being delevoped