Answer:
2. The main work done by Congress involves making laws. The Congress works to help its constituents.
The Leakeys made one of the first discoveries that early hominids possibly originated in Tanzania, Africa not Asia (which what anthropology thought at first).
<span>A.The Sahara was a savanna
Northern Africa was a place of trees, grasslands, lakes and people. Today, it is the Sahara — a desolate area larger area than Australia.
Lake Yoa, in northeastern Chad, has remained a lake through the millennia and is still a lake today, surrounded by hot desert. Although little rain falls, Lake Yoa’s water is replenished from an underground aquifer.
By analyzing thousands of layers sediment in a core drilled from the bottom of this lake, an international team of scientists has reconstructed the region’s climate as the savanna changed to Sahara.</span>
<span>Dr. Vance is likely a Cognitive Psychologist. As a Cognitive Psychologist, Dr. Vance is studying how his subjects perform cognitively (using their brain capacity and function). In this particular case, he is measuring this functionality by having his subjects solve puzzles to discover how the mind solves said puzzles.</span>
