School is an example like you have a load of work and its hard and u keep going cuz u know it will get you someone good adn another is running a marothon even though its hard you just keep going. hope this helps and please rate below :)
B and C ANSWER...
B) they are only present on the endoplasmic leaflet of the cell
C) they are only present on the cytosolic leaflet of the cell
D.
The block of wood does not stop moving at any time as shown on the chart, so the answer can't be A. or C. and the speed is not increasing so it can't be B.
Answer:
Option D.) Groundwater
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<span>A change in a organism's surroundings that causes the organism to react is called a stimulus</span>