What engulfs particles at the cell’s surface

answer:

the plasma membrane engulfs fluid droplets or particles from outside the cell and pinches of a membranous sac called a vesicle inside the cell. the engulfing of large particles, including whole microorganisms by endocytosis. the removal of waste, or secretory materials by a process that is the reverse of endocytosis.

explanation:

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just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.