A relic boundary is one that

no longer formally exists but is still influential
is defined by a historical landmark
breaks a country into two opposing factions
comes into existence because of a war
is imposed by an outside force on a country

Which biochemical cycle is relied upon for plant photosynthesis

While most people who lived in ancient egypt and the middle east avoided settling in nearby deserts, those regions protected them from their enemies. why do you think this was true?

Tides are caused by a differences in the gravitational force of the sun at different points on earth. differences in the gravitational force of the moon at different points on earth differences in earth’s gravitational field strength at different points on earth’s surfac fluctuations in the gravitational attraction between earth and the moon.