Which of the following best describes homeostasis? O the state of maintaining a stable internal environment despite changing external conditions
O the state of maintaining a stable internal environment as a result of the body producing electrical impulses
o the state of maintaining a stable internal environment as a result of the body producing chemical signals
O the state of maintaining a stable internal environment when the external conditions are constant

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.