Which of the following is the correct sequence of blood flow in birds and mammals? a. vena cava → right atrium → right ventricle → pulmonary vein. b. vena cava → left atrium → left ventricle → pulmonary artery. c. left ventricle → aorta → lungs → systemic circulation. d. vena cava → right atrium → right ventricle → pulmonary artery

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?