The graph above represents the motion of an object over time What is the average acceleration of the object over the first 4 seconds ?

А. 1 m/s^ 2
B. 2 m/s^ 2
C. 4m/s^ 2
D. 8 m/s^ 2

Please help me

What function does a limb serve in each animal how are the limb bones of the four animal similar based on the similarities what can be inferred about the evolution of the poor animals

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery

Which of the following best demonstrates the unity among all organisms? matching dna nucleotide sequencesdescent with modificationthe structure and function of dnanatural selectionemergent properties