Answer:
during an ice age , oceans become smaller and lower as the water freezes into glaciers this uncovers land with the sea level lowered early humans were able to cross land bridges between continents , most probably following herds of animals or in search of food
Explanation:
I believe that's right
Answer:
(B) Another campsite was found in New Mexico with remains dated at 16,000 years old.
Explanation:
The hypothesis is telling us that humans could not have crossed to Alaska from Siberia in the years between 11,000 - 18,000, however, if two archeological sites are found and dated 11,200 years old and 16,000 years old, the new evidence contradicts the hypothesis and the hypothesis should be discarded.
Answer:
to track various air masses and temperatures
Explanation:
During his eventual four multiple Greenland expeditions, Alfred Wegener would use the weather balloons extensively to track various air masses and temperatures.
