Idont know what it means!

because of the property of magnetic memory,

a. rocks return to their original magnetic properties

b. regardless of their iron content all rocks tend to have the same magnetic polarity

c. iron-rich rocks show the location of the magnetic poles at the time of their formation

d. iron-rich rocks have a reversed magnetic polarity

segmentation=endoskeleton=backbone=coelom=tissues

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.

answer; hydrologic cycle;

answer; blank(1); cervical; blank(2); lumbosacral;