Answer:
Ecological systems (ecosystems) have many biogeochemical cycles operating as a part of the system, for example, the water cycle, the carbon cycle, the nitrogen cycle, etc. All chemical elements occurring in organisms are part of biogeochemical cycles.
Make a cylinder which will be the glass and put a piece of paper that appears to be the top waterline of water. And put that inside the glass. I am not sure if this made any sense but yep thats what i did for a project before when i had to in like fourth grade.
The big bang theory states that the universe began approximately 10-20 billion years ago in an expansion of the universe emanating from an extremely compact point. The occurrence of super massive black holes contradict the big bang theory. Super massive black holes are found at the center of galaxies and is what keeps them together. Models do not explain how these would have formed if the big bang occurred the way it was proposed.
It should be noted that the graphs illustrated how different PH affect the population of the species.
<h3>What is PH?</h3>
It should be noted that pH simply means the measure of how acidic or basic water is. It can be deduced that the range of the pH is from 0 - 14.
From the complete question, the graphs illustrated how different PH affect the population of the species. When the pH is either too low or too high, the aquatic organisms living in it will die.
Learn more about PH on:
brainly.com/question/14097392
Answer:this area experienced warming temperatures and significantly reduced rainfall, resulting in the formation of the Sahara Desert.
Explanation: hope this helps <3
