What type of resource is water for a hydroelectric power plant?

Land
Labor
Capital

What type of plant is good for a bioassay and where can i buy it? i only have a month.

Which genetic disorders, caused by an extra x chromosome (xxy), is characterized by a lack of testicular development in males, effeminate features, possible mental impairment, and a thin stature?

What is the difference between topsoil and clay?