It is false that constellations are only visible in certain seasons due to the revolution of the Earth toward the constellation.
It means that it is increasing speed on the chart
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.
