Homo ergaster may have been the first human species to leave Africa and fossil remains show this species had expanded its range into southern Eurasia by 1.75 million years ago. Their descendents, Homo erectus, then spread eastward and were established in South East Asia by at least 1.6 million years ago.Oct 30, 2015
Answer:
A hydraulic conductivity of 7.6 ft/day converts to 2.3 m/day.
Explanation:
This problem can be solved as a simple rule of three, with the mathematical conversion from feet to m.
Each ft has 0.3048m. So how many m are there in 7.6ft?
1 ft - 0.3048m
7.6ft - x m
So
A hydraulic conductivity of 7.6 ft/day converts to 2.3 m/day.
<span>Asteroid is a rocky object that orbits the Earth.</span>
Answer:
<u>B. Tectonic</u>
Explanation:
Playa is generally dry and flat. This valley is located in New Mexico, Bootheel region. Valley is noteworthy for the lake Playa i.e a dry lake in the north. This region of desert extends to northwards to the foothills of various mountain ranges, canyons and washes. It's a liner north to south trending towards mountain ranges and flat in south. Playas are formed due to evaporation of water that leaves salt behind it may be underlined with stratified sand, silt and clay. The salt flat valley also called salt marshes. A variety of playas bed occurs in restricted basins that are without outlets. The salts that form these are Chlorine, sulfate, and carbonate. Hence this landform is a product of tectonic forces and factors that influence the growth and development of this valley.
I believe it's globular and open are the main types.
