What object in the sky is used to determine local time ?

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed

In saudi arabia, voting rights are limited to

Why do so many children develop illnesses in southern africa? a. poor nutrition due to poverty c. very bad air pollution b. climate many diseases thrive d. declining life expectancy