Answer:
Scientists used major changes in life forms in the fossil record to form the geologic time scale.
hi here is your answer hope it helps or then sry
Explanation:
The Great Artesian Basin (GAB) is one of Australia's most significant hydrogeological entities. Covering more than 1.7 million square kilometres, the GAB underlies parts of Queensland, New South Wales, South Australia and the Northern Territory.
The answer is Cyclical unemployment.
Answer:

Explanation:
y=2x-5
y=mx+b
perpendicular = slope is -1
y=-1/2x+b
Passes throught 2,-5
-5=-1/2(2)+b
-5=-1+b
b=-4
y=-1/2x-4
Hope this helps!