Answer:
i think sound waves idk im not a scientist
Explanation:
Honestly it depends on what state so you have to look up if they are legal in your area
By changing the color of a beetle, this could cause disruption in which animals consume the beetle. A specific pattern could possibly mimic one of a poisonous beetle, thus reducing the amount of beetles eaten. This would cause a growth in population of said beetles and a possible decrease in population for animals that consume the beetles.
The Chesapeake bay is an estuary in United States. The presence of nitrogen and phosphorus in the estuary can cause harm to the aquatic species present there.
The main source of nitrogen in the Chesapeake bay is the agricultural runoff. The pesticides and the herbicides used in the agriculture may come along the runoff and get mixed with large rivers and water bodies. The nitrogen from agricultural runoff accounts approximately 40% of the total sources of nitrogen.
Hence, the correct answer is agricultural runoff.
The best answer is D
A freely suspended magnet will always point in the North - South direction in the absence of any other magnet. This suggests that the earth itself behaves as a magnet which causes a freely suspended magnet (or magnetic needle ) to point always in a particular direction namely North and South.
The south pole of the earth's magnet is in the geographic north because it attracts the north pole of the suspended magnet and vice versa. However it is important to note that the position of earth's magnetic poles are not well defined because they are spread over an area.
