In the human nervous system, the brain is an example of what level of organization? a. cell b. tissue c. organ system d. organ

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Graphs you see question 5 options: the change in data over time the relationship between different dependent variables the relationship between the independent variable and the dependent variable/s the relationship between different independent variables