Several key factors help to determine the types and numbers of organisms found in the various layers of both freshwater and marine systems. What is not one of these? a. algal bloom b. availability of food c. temperature d. availability of nutrients e. dissolved oxygen levels

a. algal bloom

Explanation:

The availability of food in the systems can tell the types and numbers of organisms in the systems by checking which types of organisms eat the food available as well as the quantity available to see the number of organisms.

Temperature and dissolved oxygen levels also play a huge part in determining the feasibility of organisms staying in the system. The availability of nutrients goes hand in hand with the availability of food in determining the organisms present.

Algal bloom is not a factor in determining the types and numbers of organisms found in a system because the conditions that caused this bloom might not be suitable for other organisms as well.

would the answer be physical geography and cultural geography i haven't studied geography but i searched it online and those are my answers.

hope this .

plz mark me as brainliest answer: d

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.