Suppose a mutation arises in a population of sunflowers that results in xylem vessels twice as large in diameter as the wild-type vessels. These mutant xylem vessels will have water transport capacity, and will be susceptible to cavitation from freezing. higher; more higher; less lower; less lower; more

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.