Drought
that is the answer, I'm pretty sure
The answer is <span>to form a symbiotic relationship and obtain ammonia. Hope this helps!</span>
Rough er= Rough endoplasmic reticulum ,has ribosomes on the surface ,<span>membranes that contain ribosomes and helps to make proteins </span>
Smooth er= Smooth endoplasmic reticulum,no ribosomes on surface
Answer:
Fish, water pH and the water itself
Explanation:
Fish affect the freshwater system since they live and excrete their waste in the water
pH levels of water should not be below 6 or above 8 for a healthy drink
Also, algae affects the freshwater system
