What is a biotic component of a marine ecosystem? detritus on the ocean floor the oxygen concentration of the water rocks on the ocean floor the temperature of the water

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary