Answer:
fresh-water, salt-water
Animals
Explanation:
Sponges are the simplest and most primitive animals on earth. They are found in continental water bodies, where 98% of the population are found in salt-water and the remainder in fresh-water.
They have little or no defined organs and movement is hardly noticed in adult sponges, feed by filtration, and have a rather flexible skeletal structure.
The North Sea has very important natural resources such as oil and natural gas. Oil is a mixture of organic compounds, mainly hydrocarbons insoluble in water, it is also known as crude oil or simply crude and gas natural which is an important source of fossil energy released by its combustion.
Answer: C. every ecosystem in the area
Explanation:
Answer:
Fast changes occur through the actions of Earthquakes, volcanoes, landslides, etc. over short periods of time
hopefully this helps
<span>Earth’s rotation takes about
24 hours. By definition, the rotation of earth is the amount of time it takes
to rotate once around its axis. On average, this apparently happens once a day i.e
after every 24 hours with respect to the sun (solar day) and once after every
23 hours, 56 minutes and 4.09 seconds with respect to the stars (sidereal day).
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