"The major objective of population education is improving quality of life to keep happy family". Clarify it ​

Slowly swimming towards recovery, california's sea otter numbers holding steady posted on september 22, 2014 usgs.gov read the following passage: when sea otters want to rest, they wrap a piece of kelp around their body to hold themselves steady among the rolling waves. likewise, california's sea otter numbers are holding steady against the many forces pushing against their population recovery, according to the latest field survey led by federal, state, aquarium, and university scientists. since the 1980s, u.s. geological survey scientists have calculated a population index each year for the southern sea otter—enhydra lutris nereis—a species federally listed as threatened. the annual range-wide field survey collects data on this protected marine mammal on behalf of the u.s. fish and wildlife service. trends in population index reported by usgs for southern sea otters in california. data are shown for independent otters, nonpups, and all otters for mainland california, san nicolas island, and rangewide from 2012 onward. the mainland all otters line increases gradually from 1990 to 2014 from less than 1800 to about 2800. the mainland independents mirror the all otter population curve at slightly lower numbers. the san nicolas island population begins at about 18 in 1992 and climbs to about 65 in 2014. why does the author include the chart in the article? to provide a comparison of changes in the two groups of sea otter populations to provide a depiction of the variety of sea otter populations in the area to provide a list of the groups of ecosystems that were included in the study to provide a visual representation of how sea otter populations have changed

But we pulled at the grill [on the ground] and it gave way. and then we saw iron rings as steps leading down a shaft into a darkness without bottom. … it was a great tunnel. its walls were hard and smooth to the touch; it felt like stone, but it was not stone. on the ground there were long thin tracks of iron, but it was not iron; it felt smooth and cold as glass. we knelt, and we crawled forward, our hand groping along the iron line to see where it would lead. but there was an unbroken night ahead. what is the most likely explanation for the walls described in the bold text?

Theodore is writing a blog post on the relationship between music and a person’s mood. which of the following sentences might appear in his conclusion? a. do you have a particular song that always makes you feel better? b. a recent study shows that music can enhance a good mood and relieve a bad mood. c. whatever the reason, it is clear that music is deeply connected to human emotions. d. the researchers found that the type of music was less important than how much the subject enjoyed it.