What is the current axial tilt of the earth?
A) 24 degrees B) 45 degrees C) 21.5 degrees D) 23.5 degrees
Question 2
The Kurgans, identified as the first Proto-Indo-European speakers by archaeologist Marija Gimbutas
A) conquered much of East Asia several thousand years ago.
B) were a Germanic tribe that invaded England.
C) were herders from the steppes of today's Russia and Kazakhstan.
D) preserved Basque in present-day Spain.
E) were the earliest speakers of Sino-Caucasian, which they diffused through conquest.
From space earth shows itself as a planet covered mostly by water.
Schematic of the Earth–Moon system (without a consistent scale)
6-8 Earth’s Major Tectonic Plates
Rivers on Mars and Earth
Effects of Earth’s Changing Orientation: Solar Angle
Current intensity and the frequency of action potentials