I think it should be D. A loss in biodiversity due to catastrophic event.
Okay, I would bend over backwards! :)
Leeuwenhoek was inspecting things under his artifial magnifying instrument and found single-cell living beings that he alluded to as protists.
Answer:
Rods
Explanation:
Rods are specialized photoreceptors that function best in low-light conditions. They are a major part of our vision in dimly lit environments, as well as our perception of movement in our peripheral vision.
The hormone described above is the hormone Melatonin.
Melatonin is a hormone secreted by the pineal gland in the brain, which helps regulate other hormones and maintains the body's circadian rhythm. This rhythm is an internal 24 hour clock that plays a critical role when we fall asleep and when awake. When it is dark the body releases more melatonin.
Facilitated diffusion does not use cellular energy.
Since the transportation of molecules occurs through the concentration gradient, it doesn’t use cellular energy for transportation of molecules.
