Sam brought home a tiny puppy. Her puppy grew. Four weeks later, her puppy had grown to twice its original size. Which answer below best explains why Sam's puppy got bigger? A. The number of cells in the puppy's body increased. B The puppy's body absorbed the food it ate. C The puppy's body cells grew larger as it got older. D Parts of the puppy's body stretched out more.

Growth and development is part of the basic characteristics of life. A newborn baby undergoes this process to become an adult.

The answer that best explains why Sam's puppy got bigger is that the number of cells in the puppy's body increased. (option A).

Learn more: link

velocity and height

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation: