When a plant grows toward sunlight it is called positive phototrophism.
Answer: A puddle will eventually disappear after a rainstorm ends due to evaporation. This is caused by the heat of the sun, which converts the liquid water into steam (a gas) and evaporates.
Answer:
Doppler effect is a change in frequency and wavelength of a wave. It is caused by the change in distance between the thing creating the wave (causer) and whatever is measuring seeing or hearing the wave (watcher or observer). Another word for "causer" is "sender".
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It is unsafe because it could give the baby defects.
Answer:
To survive. Drinking is very important and is required for animals and organisms to survive. It also keeps us hydrated.
