It's something to do with the fact that having sickle cell anaemia reduces the chances of contracting malaria, obviously a very common disease in Africa. I'm not quite sure what the link is but hopefully this helps a little bit?
Explanation:
yes there is a one in four chance the kid could have type O blood because the father and mother could pass on their A or O gene version
tech interactive
Answer: Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.
Explanation:
Answer:
through wires
Explanation:
Electrical energy passes through conductors but may also travel through space but select wires as it is a more common answer.
Answer:
Shows the common ancestor of all living organisms
Explanation:
They're just the lineup of organisms looking for a common ancestor and common traits or where the traits came from.
