Question

1. what does the first law of thermodynamics state?
2. define absolute 0:
3. how do plants and other autotrophs get their energy?
4. how do consumers get their energy?
5. where does all energy ultimately come from that is in food?

Explanation:

1. The first law of thermodynamics is about energy conservation. It's a fundamental concept in thermodynamics.
2. Absolute 0 is a key temperature concept in physics related to molecular motion.
3. Autotrophs like plants use a specific process (photosynthesis) to obtain energy.
4. Consumers have a different energy - acquisition method (eating other organisms).
5. Tracing the source of energy in food leads to a primary source (the sun).

Answer:

1. The first law of thermodynamics states that energy is conserved; it can be transferred or transformed but not created or destroyed.
2. Absolute 0 (\(0\space K\) or \(- 273.15^{\circ}C\)) is the lowest possible temperature where molecular motion (in an ideal gas) theoretically ceases.
3. Plants and other autotrophs get their energy through photosynthesis, converting light (solar) energy into chemical energy.
4. Consumers get their energy by consuming (eating) other organisms (autotrophs or other consumers).
5. All energy in food ultimately comes from the sun.