Answer:
That layer is called the a horizon, so the answer is A.
Explanation:
Sunflowers grow on a large stalk, and often only produce one flower. paddy plants produce many small flowers, with heavy pollen.
Answer:
Closed the first one
Explanation:
In amphibians, reptiles, birds, and mammals, blood flow is directed in two circuits: one through the lungs and back to the heart, which is called pulmonary circulation, and the other throughout the rest of the body and its organs including the brain (systemic circulation).
most mammals, have closed cardiovascular systems. The two main circulation pathways in invertebrates are the single and double circulation pathways.
D. They both help organisms to move.
