1. Which organisms are capable of converting gaseous nitrogen in the air into a form that other living organisms can use? (1 point)

nitrogen-fixing bacteria
denitrifying bacteria
decomposers
producers
2. Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process? (1 point)
denitrification
nitrogen fixation
producer uptake of nitrogen
consumer decomposition
3. Which of the following is carried out by denitrifying bacteria? (1 point)
break down large, nitrogen-rich molecules to simple molecules
build large, nitrogen-rich molecules from simple molecules
convert biologically useful nitrogen to gaseous nitrogen
convert gaseous nitrogen to biologically useful nitrogen
4. Which type of organism moves nitrogen from cells of producers back to the soil? (1 point)
decomposers
consumers
nitrogen-fixing bacteria
denitrifying bacteria
5. What would be the consequence of an ecosystem that had no nitrogen-fixing bacteria? (1 point)
Nitrogen from decomposing animals would never be returned to the soil.
Decomposers would not be able to break down the nitrogen present in plants they feed on.
Plants would have to rely on biologically available nitrogen present in the soil.
Consumers would not survive since they would have no way to obtain the nitrogen they need.

please help someone I need help on this too!!!!

1.A

2.C
3.C
4.C
5.A
trust me i got a 100%

wait 4 c And number 5 c my bad

1. To answer the first question, we need to understand which organisms are capable of converting gaseous nitrogen in the air into a form that other living organisms can use. One way to find the answer is to look at the options provided: nitrogen-fixing bacteria, denitrifying bacteria, decomposers, and producers.

Nitrogen-fixing bacteria are known for their ability to convert atmospheric nitrogen into a form (such as ammonia or nitrates) that can be used by other living organisms. They play a crucial role in the nitrogen cycle by facilitating the conversion of nitrogen gas into a biologically available form.

Denitrifying bacteria, on the other hand, carry out denitrification, which is the process of converting biologically useful nitrogen in the form of nitrates back into gaseous nitrogen. They do the opposite of what the question asks for, so we can eliminate this option.

Decomposers, such as fungi and bacteria, primarily break down large, nitrogen-rich molecules to simpler molecules during the decomposition process. While this is an essential part of nutrient cycling, decomposers themselves do not convert gaseous nitrogen into a usable form.

Producers, most commonly referring to plants, are not directly involved in converting gaseous nitrogen into a usable form. They require nitrogen to be in the soil or water, but they do not have the ability to fix nitrogen themselves. Therefore, producers can be eliminated as well.

Based on this analysis, the answer to question 1 is nitrogen-fixing bacteria.

2. Moving on to the second question, we need to determine which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process. Eutrophication refers to the excessive enrichment of water bodies with nutrients, including nitrogen.

To find the answer, we can look at the options provided: denitrification, nitrogen fixation, producer uptake of nitrogen, and consumer decomposition.

Denitrification is the process of converting biologically useful nitrogen into gaseous nitrogen, so it is not the step that is accelerated during eutrophication. We can eliminate this option.

Nitrogen fixation, carried out by nitrogen-fixing bacteria, is not directly related to eutrophication. Nitrogen fixation converts gaseous nitrogen into a form that can be used by plants, but it is not the step that is accelerated by eutrophication.

Producer uptake of nitrogen refers to the process by which plants take up nitrogen from the soil or water to meet their nutrient requirements. While this process is affected by eutrophication, it is not the step that is accelerated. Therefore, we can eliminate this option as well.

Consumer decomposition is the process in which decomposers break down organic matter, releasing nutrients, including nitrogen, back into the environment. This step is indeed accelerated during eutrophication as there is an increase in the amount of organic matter available for decomposition.

Thus, the answer to question 2 is consumer decomposition.

3. Moving on to the third question, we need to determine which action is carried out by denitrifying bacteria. To answer this question, let's look at the options provided: break down large, nitrogen-rich molecules to simple molecules, build large, nitrogen-rich molecules from simple molecules, convert biologically useful nitrogen to gaseous nitrogen, and convert gaseous nitrogen to biologically useful nitrogen.

Denitrifying bacteria convert biologically useful nitrogen to gaseous nitrogen. They play a role in the nitrogen cycle by converting nitrate ions (NO3-) or other forms of biologically available nitrogen back into gaseous nitrogen (N2). This process, called denitrification, occurs under low-oxygen conditions and contributes to the recycling of nitrogen in the environment.

Therefore, the answer to question 3 is convert biologically useful nitrogen to gaseous nitrogen.

4. Now, let's move on to the fourth question, which asks which type of organism moves nitrogen from cells of producers back to the soil. To answer this question, we need to consider the options provided: decomposers, consumers, nitrogen-fixing bacteria, and denitrifying bacteria.

Decomposers, such as fungi and bacteria, are responsible for breaking down dead organic matter, including the cells of producers (plants), and returning nutrients, including nitrogen, back to the soil. They play a crucial role in the decomposition process and the recycling of nutrients.

Consumers, which include animals, obtain nitrogen by consuming producers or other consumers. However, they do not directly move nitrogen back to the soil.

Nitrogen-fixing bacteria convert gaseous nitrogen into a form usable by other living organisms, but they do not play a role in moving nitrogen from cells of producers back to the soil.

Similarly, denitrifying bacteria convert biologically useful nitrogen back into gaseous nitrogen but are not involved in moving nitrogen from cells of producers back to the soil.

Based on this analysis, the answer to question 4 is decomposers.

5. Finally, let's address the last question, which asks about the consequence of an ecosystem that had no nitrogen-fixing bacteria. To answer this question, we need to consider the options provided: nitrogen from decomposing animals would never be returned to the soil, decomposers would not be able to break down the nitrogen present in plants they feed on, plants would have to rely on biologically available nitrogen present in the soil, and consumers would not survive since they would have no way to obtain the nitrogen they need.

Nitrogen-fixing bacteria are crucial for converting gaseous nitrogen in the atmosphere into a biologically usable form, such as ammonia or nitrates. Without nitrogen-fixing bacteria, plants would have limited access to nitrogen from the atmosphere. As a result, plants would have to rely on biologically available nitrogen present in the soil. This would put a strain on the nitrogen available to plants, potentially leading to nutrient deficiencies and limiting their growth.

Therefore, the consequence of an ecosystem that had no nitrogen-fixing bacteria would be that plants would have to rely on biologically available nitrogen present in the soil.

I hope this explanation helps in understanding how to answer these questions. If you have any further questions, feel free to ask!