Which of the following are considered the most effective types of reward?

a. noise and water b. rest and isolation c. food and praise d. light and sound

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Explain why ecosystem diversity results in species diversity in a healthy biosphere

Isotopes of the same element have differ in their