The greater the mass of an object, the more you needed to move it. A. help
B. force
C. energy
D. time

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

26 a medida que cambia el clima, ¿qué tipo de reproducción más probablemente de a una especie mayores posibilidades de supervivencia?