Which item is a biological contaminant?

The hydrologic, carbon, nitrogen, and phosphorus cycles are essential to the . this is why they are called biogeochemical cycles.

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.

Ahallmark of psychology is conducting research on any and all human and animal behavior, mental abilities and biological process. let’s say you are a psychologist who was granted funding to conduct a research study. what would you research and hope to find? what phenomenon or experiences have open your interests to this? what would you predict the outcome of your study would find?