Why is anaerobic respiration considered less efficient than aerobic respiration? a less energy is required during anaerobic respiration than aerobic respiration. b more oxygen is required for anaerobic respiration than for aerobic respiration. c more atp molecules are gained in aerobic respiration than in anaerobic respiration. d less lactic acid is formed during anaerobic respiration than during aerobic respiration.

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher