Answer:
The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life.
Explanation:
None needed.
Answer:
<em>yellow to red is an acidic solution
</em>
<em>blue to violet is bases
</em>
<em>green color is a solution is neutral</em>
Explanation:
The answer is A. Man-made
Answer:
D and B
Explanation:
it is hard to explain but
Xylem is responsible for the transport of water and dissolved ions
The phloem is made of companion cells that form to connect pipes