Answer: Ecosystem
Explanation: An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. A niche refers to the role of a species in its ecosystem. A habitat is the physical environment in which a species lives and to which it is adapted.
The relevant questions are number 2, 3, and 4.
Answer:
An oil spill, fertilizer run off, and another thing i could think of is a flood hope this helped :)
Explanation:
Circulatory system and nucleus
Answer: Cellulose
Explanation:
Starch and cellulose are they two primary polysacharride found in plants.
Starch is the storage polysacharride found in plants in consisting of both linear chain amylose and branch chain amylopectin.
While Cellulose is the structural polysacharride in cell wall of plants. Cellulose consist of a linear chain of thousands of D-glucose units linked together by beta linkages.