The luster tells if a mineral is metallic or not.
Answer:
Explanation:
Cells are considered the basic units of life in part because they come in discrete and easily recognizable packages. That's because all cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments.
The correct answer is (b) Levees prevent rivers from flooding their banks.
Levees are formed when water pushes the sediments to the side of a river. They serve as a natural barrier and prevents flood. This is very beneficial in terms of human settlement. Levees can be natural or artificial. They prevent water from going into the areas where there is a human settlement (bank of river). They prevent the rivers from flooding cities in a storm surge. If levees are broken the result can be disastrous for the surrounding area.
<em>An answer choice that is not an example of an organism responding to a stimulus would be;</em>
B) squinting your eyes when walking into bright sunlight
<u>Squinting your eyes in bright sunlight is an involuntary action, and does not require any kind of stimulus. </u>
