When ice melts, it exposes more land, further decreasing the
earth's reflectivity, causing the
earth to warm further and more
ice to melt. This is known as a
A. positive feedback loop
B. horizontal feedback loop
C. negative feedback loop
D. vertical feedback loop

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.