If the flowers contain 50,000 kcal of energy, about how much energy will the lizard obtain from eating the butterfly?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

In a good thermo flask the main cause of heat loss is

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?