The answer is: Create a diagram that hypothesizes ancestry.
The best way to do a observation can be a microscope or by taking notes ,and by , taking pictures or, asking questions about the subject that you and the teacher or you, your teacher and the class is talking about .! Hope this helps ..
Arteries. The arteries are major blood vessels connected to your heart. The pulmonary artery carries blood from the right side of the heart to the lungs to pick up a fresh supply of oxygen. The aorta is the main artery that carries oxygen-rich blood from the left side of the heart to the body.
It is the process of muscle contraction involving the sliding of actin & myosin myofilaments past each other to shorten the length of each sacromere.
Is the letter D because your having half of their DNA. That's why your mother is contributing the Y chromosome and your father is contributing the X chromosome