Over geologic time, this ratio is increased in proportion to the 87Rb/86Sr ratio, as discussed earlier, and the line rotates with a slope equal to (eλt − 1) that represents the time elapsed; thus, the present-day ratio (87Sr/86Sr p equals the initial ratio (87Sr/86Sr 0 plus radiogenic additions, or (87Sr/86Sr p = (87Sr/86Sr 0 + 87Rb/86Sr (eλt − 1).
Temperatures are relative to present day a mid-Holocene climate optimum of +1.5 °C between 7 and 3.5 kyr BP, medieval warm period of +0.8 °C between 1 and 0.7 kyr BP, Little Ice Age of −1.0 °C between 0.6 and 0.15 kr BP (but introduced in two equal steps at 700 and 600 years ago) and return to present-day temperatures with 4 equal steps of 0.25 °C between 150 and 120 years ago.
return to present-day temperatures with 4 equal steps of 0.25 °C between 150 and 120 years ago.
The emphasis of the present-day protest movements is on inclusion: equal salaries, equal education, the right to marry.
The most active art, and probably the most successful, is basketry, in which the present-day artists are in every way equal to, or better than, their predecessors.
Flamer-Caldera recently spoke about her experience advocating for LGBT rights--from 1970s San Francisco to present-day Sri Lanka--with American Jewish World Service, a long-time funder of Equal Ground.
Rough limits to present-day ferricrust formation are the 500- to 700-millimetre (20- to 27.5-inch) isohyet (contour of equal rainfall values), below which iron is not readily mobilized, and the 1,200-mm 1,200-mm above whisohyetydrabove is unusual.
Evolution is occurring among present-day insects.
Present-day Skyros is a resort.
Present-day Egypt, however, is largely urban.
Eastern Yiddish, roughly equal in importance to its western counterpart during the Middle Yiddish period (c. 1350 1600), vastly overtook it in the Early New Yiddish period (from roughly 1600) and includes all present-day spoken Yiddish.
