Sickle cell anemia occurs when it is passed down from the parents. It is a look diese. It is caused by when 2 parents inherit 2 abnormal genes. It's when the blood cells change shape. Pediatrics use amniocentesis to see if the baby has missing chromosomes hat cause Down syndrome in early pregnancy
The growth rings of a tree is the physical reality of the age of the tree and by examination can confirm the history behind a tree. By studying the rings you can find info about previous climate using the proper process that science says.
Answer:C
Explanation:
In order to draw a conclusion he needed to do an experiment based on his hypothesis first, then be able to conclude from his results if these breeds can real survive the cold weather.
Answer:
The basic biological unit of heredity.
Explanation:
Answer: During the process of photosynthesis plants break apart the reactants of carbon dioxide and water and recombine them to produce oxygen (O2) and a form of sugar called glucose (C6H12O6).