How many bench marks are there on the map? what elevations do they mark?

Fertility and mortality rates are higher in more developed nations.

b) is there any ordinal sense to zip codes? in other words, does a larger zip code tell you anything about a location compared to a smaller zip code?

Which statement best explains the relationship between an area's geography and the temperature of its surface water? areas at low altitudes have the warmest water because they receive the most direct sunlight. areas at low altitudes have the warmest water because they have the least change in temperature throughout the year. areas at high latitudes have the warmest water because their days are the longest. areas at high latitudes have the warmest water because they have the longest seasons.