Tropical and polar climate zones are very distinct. this is because
a. the sun's rays are more concentrated near the equator
b. the sun's rays are more concentrated near the poles
c. the poles absorb sunlight more effectively
d. clouds reflect more sunlight at the equator

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

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.

Which test would show positive results for orange juice