Hiya,
The answer is Solar Energy.
Hope this helps!
The last option is corrrect because when one species move away from an environment or die it lead to decrease in biodiversity as well as the overall health of ecosystem also decreases.
Bulk flow refers to the movement of phloem sap from a source to a sink in plants.
<h3>What is Phloem?</h3>
This is a vascular tissue found in plants which helps to transport and distribution of the organic nutrients derived from photosynthesis.
Bulk flow occur when these nutrients present in the phloem sap are moved from source to sink.
Read more about Phloem here brainly.com/question/983997
A niche describes where the organism lives and how it interacts with its environment .
hope this helps !
