Approximately 75 percent of the earth's surface is covered in water. so why, based on the information in the table below, is water considered such a precious resource? a. each year, more freshwater is being trapped in icecaps located at the north and south poles. b. global warming caused by greenhouse gas emissions will likely cause earth's oceans to evaporate. c. the greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere. d. only a small fraction of the earth's water is freshwater available for drinking and irrigation.

D.

Only a small fraction of the Earth's water is freshwater available for drinking and irrigation.

Explanation:

Water is considered a precious resources because a small percentage of all the water on earth is considered suitable for domestic and other important uses. Other water forms need to be processed before they can be deemed suitable for use and these processes are time and resource consuming.

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.