Basically, areas without much plant life have low chlorophyll concentration. In this case, extreme climates characterizes these areas. Specifically, the desert, polar tundra, and high mountain ridges are three areas which have low chlorophyll concentrations. The main characteristics are that they have no soil, shallow soil, or soil that lacks in nutrients, which makes it not suitable for plants to grow; they also have limited water available. Since chlorophyll is contained in vegetation, any area without plants will lack chlorophyll. Hope this helps!
Answer: Desert, Polar Tundra, and High Mountain Ridges because of lack of soil or nutrient in the soil, and lack of water.
Answer:
Stress hormones at the time of learning __<em>interferes</em>___ new memory formation; the presence of stress hormones at the time of recall _<em>impairs</em>____ retrieval of older memories.
Explanation:
When stressed, the human body produces some stress hormone. Some of these hormones can affect certain parts of the brain, interfering with the encoding of new memory, and inhibiting the recall of long term or older memories. An example of a stress hormone responsible for negatively affecting long-term, delayed recall memory is the cortisol, and the effect is usually felt at the hippocampus, prefrontal cortex and the amygdala.
