Aquifers are

a. structures used to transport water from city to city

b. created through evapotranspiration

c. densely packed snow close to becoming glaciers

d.
layers of porous rock or sand

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f

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.