Answer:
A person who receives a gene for sickle cell disease from one parent and a normal gene from the other has a condition called "sickle cell trait." Sickle cell trait produces no symptoms or problems for most people. Sickle cell disease can neither be contracted nor passed on to another person.
A method of raising livestock and moving herds.
Answer:
A. Hypothesis
Explanation:
A hypothesis is a well-tested, scientifically supported statement that explains how something works.
Elevation or Altitude effect climate
Prevailing global wind patterns
Topography
Effects of Geography
Surface of the Earth
Climate change over time
