Which feature of a rosebush is an adaptation for defense? A. Sharp thorns
B. Showy flowers
C. Deep roots
D. Compound leaves
Brandlist to who help

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.