What is the main idea of the model shown? A. Energy from sunlight is transferred through trophic levels.
B. Light energy is transformed into chemical energy.
C. Energy in food molecules is released and stored in ATP.
D. Aerobic and anaerobic reactions take place in chloroplasts.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.