Question 13 (1 point) Which of the following best describes the net primary productivity of an ecosystem?

Net primary productivity is the amount of energy lost by producers through respiration over time.
Net primary productivity is the amount of energy captured by producers through photosynthesis over time.
Net primary productivity is the amount of energy lost through respiration by producers subtracted from the gross primary
productivity of an ecosystem.
Net primary productivity is the amount of energy lost through respiration by producers added to the gross primary productivity of
an ecosystemh

Net primary productivity can be defined as the amount of energy lost through respiration by producers subtracted from the gross primary.

In conclusion, the net primary productivity can be defined as the amount of energy lost through respiration by producers subtracted from the gross primary.

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answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

c. the initial amount of money placed in the savings account