Question

1. what do consumers release as they break down food to obtain energy? a. sugar b. carbon dioxide and water c. free nitrogen d. oxygen 14. rain, hail, and snow are all examples of a. condensation. b. evaporation. c. erosion. d. precipitation. 15. in one form of nitrogen fixation, the ..................... energy of ..................... splits nitrogen molecules into atoms. a. chemical, water vapor b. mechanical, consumers c. electrical, lightning d. released, bacteria 16. sep use evidence cite evidence to show that living systems follow the laws of conservation of mass and energy. 17. ccc energy and matter how is carbon cycled between organisms and the environment?

Explanation:

13.

When consumers break down food (cellular respiration), glucose reacts with oxygen. The chemical equation is \(C_6H_{12}O_6+6O_2
ightarrow6CO_2 + 6H_2O+\text{energy}\). Sugar (\(C_6H_{12}O_6\)) is consumed, oxygen (\(O_2\)) is consumed, free nitrogen (\(N_2\)) is not involved in this process. Carbon - dioxide (\(CO_2\)) and water (\(H_2O\)) are released as by - products.

Condensation is the process of water vapor turning into liquid or solid water (like clouds forming). Evaporation is liquid water turning into vapor. Erosion is the wearing away of land. Precipitation is any form of water (liquid or solid) that falls from the atmosphere to the Earth's surface. Rain, hail, and snow all fall from the sky, so they are examples of precipitation.

In one form of nitrogen fixation (atmospheric nitrogen fixation), the electrical energy of lightning (\(N_2+O_2\xrightarrow{\text{lightning}}2NO\)) splits nitrogen molecules (\(N_2\)) into atoms. Chemical energy of water vapor is not relevant here. Mechanical energy of consumers is not involved in splitting \(N_2\). Bacteria are involved in biological nitrogen fixation, not in the process where lightning is the energy source.

Answer:

B. carbon dioxide and water

14.