Answer: Low oxygen content.
Explanation:
There are many dangers to the survival of fish in shallow water that depend on the properties of water.
1. The oxygen content drops during the winter and also in hot weather. Fish cannot survive without enough oxygen in the water.
2. High evaporation rates can drain the pond.
3. Fortunately, water has a high thermal mass, so overheating the water to the boiling point is not an issue.
Of the three reasons given, lack of oxygen is the most critical.
Answer:
Vor 416 bis 360 Millionen Jahren
Wurzeln waren eine frühe Entwicklung im Pflanzenleben und entwickelten sich an Land während der Devon-Zeit vor 416 bis 360 Millionen Jahren (Gensel et al., 2001; Raven und Edwards, 2001; Boyce, 2005; Kenrick, 2013).
Explanation:
Entschuldigung, wenn das nicht geholfen hat
Answer:
One change to Earth's surface can result in changes to other Earth systems.
All of the spheres on the Earth are interconnected, and they constantly interact with each other. When there's a change in one of the spheres then the other ones have changed as well. This is the case with the hydrosphere and the atmosphere. The atmosphere is becoming hotter in the past few decades, and this is contributing to the increased temperature of the hydrosphere (in this case, the sea surface). With the increasing temperatures of the sea surface, the cyclone activity becomes bigger and stronger, and this contributes to lots of natural disasters. So we can easily see the interaction and changes in this case between the spheres;
* atmosphere gets hotter - temperature of the sea surface rises - bigger cyclone activity.
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.
