Introduced sewage in water systems
a. decreases levels of phosphorus and nitrogen
b. increases oxygen levels
c. increases concentrations of solids
d. leads to decreases in the temperature

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius

How can an organ, such as the lungs, work for multiple body systems?

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.