7. If a toy helicopter is moving at 10 m/s, how much energy does the 5 kg toy have?

Why are current extinctions of concern to enviromentalists?

Homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?

Which statements best describe the atoms of the gas neon? check all that apply