What is the major source of water for earths atmosphere

How would you make the observation "The bird chirped" into a scientific observation?

In which stage of the transtheoretical model of exercise program adherence must the participant be most vigilant against a relapse into physical inactivity?

Bob put a frozen fish on the stage of a dissecting scope because he wanted to observe the cells in the fish's eye. Bob saw nothing. Why?

What role does pattern recognition play in science? A it allows theories to be accepted more quickly as truth B it enables us to imagine living 10,000 years ago as hunter-gatherers C it allows for testing more than one variable at a time D it allows

What role do red blood cells play in the human body?

Which process occurs in mitocodria

Biogeographic isolation separates of a species through geographical and biological forces.

The scientists that first described the structure of DNA were:

8 tell how can your health triangle become unbalanced and how can this imbalance affect your health

Who would decide whether scientist should pursue research that possess ethical dilemmas?