What are two ways in which fungi are beneficial? how can fungi be dangerous?

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!