Answer:
mass and distance
Explanation:
As the two objects get further away, the distance between them increase and the strength of the gravitational force decreases. If the distances decreases, the force will increase. The bigger the object, the greater the force.
I think the correct answer from the choices listed above is the third option. The scientific information that most likely lead to school districts requiring vaccines would be that vaccines prevent diseases and can improve a school’s safety. Hope this answers the question. Have a nice day.
Answer:
Venous return (VR) is the flow of blood back to the heart.
Venous return to the right atrium is the most important factor determining cardiac output, provided both ventricles and the pulmonary circulation are normal.
Explanation:
Venous return refers to the flow of blood from the periphery back to the right atrium, and except for periods of a few seconds, it is equal to cardiac output.
Venous return is facilitated by a number of factors, including inspiration, increased total blood volume, increased venomotor tone, the cardiac suction effect, the presence of venous valves and the skeletal muscle pump.
Contraction of the skeletal muscles surrounding veins increases the pressure within the veins, pushing open the proximal valve and forcing blood toward the heart. For example, when calf muscles contract during exercise, blood is forced toward the heart, thus increasing venous return.
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Because of genetic drift the existance of species is assured.so <span> genetic diversity important to the concept of natural selection</span>
Answer:
Convergent Evolution: flying squirrel and...
Coevolution: Flower and Bee
Divergent Evolution: Cichlid fishes
Explanation:
