which marine ecosystem has continuous sunlight during summer but darkness in winter, and it's waters are barely above freezing?

just go with your heart buddy

i think that d. wind is the answer.   i missed the question when i answered a. currents.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )