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Step2247 [10]
2 years ago
13

Scientists observed that the populations of top-level consumers in a particular ecosystem were rapidly decreasing. Further studi

es revealed that there was also a decline in producer productivity. Which other changes did the scientists most likely observe in the ecosystem?
increased producer diversity


decreased population size at all levels


decreased primary consumer populations only


increased primary and secondary consumer diversity
Biology
1 answer:
yanalaym [24]2 years ago
5 0

Answer:

The correct answer is - decreased population size at all levels.

Explanation:

A decrease in the productivity of producers of an ecosystem will lead to a decrease in all other organisms of the ecosystem including top-level consumers to the bottom-level producers due to the fact that producers provide energy and food to primary consumers.

It is because they are the only organisms that convert the sunlight to usable energy and food that transfer from one trophic level to other, so if the population of producers or their productivity will decrease then there will be decreased population size at all levels.

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C for sure! Or other answe is D
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Which of the following statements is correct? a. Aldosterone is secreted in response to elevated levels of sodium in the blood.
vova2212 [387]

Answer:

b. Aldosterone promotes sodium reabsorption in the kidneys.

Explanation:

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3 years ago
How long does it take for a person's cells to all die after clinical death?
Blababa [14]
Clinical death is the medical term for cessation of blood circulation and breathing, the two necessary criteria to sustain human and many other organisms' lives.

It occurs when the heart stops beating in a regular rhythm, a condition called cardiac arrest.


Brain injuries start to accumulate almost immediately after Clinical Death.

Full recovery of the brain after more than 3 minutes of clinical death at normal body temperature is rare.

Usually brain damage or later brain death results after longer intervals of clinical death even if the heart is restarted and blood circulation is successfully restored.
Although loss of function is almost immediate, there is no specific duration of clinical death at which the non-functioning brain clearly dies.






The most vulnerable cells in the brain, CA1 neurons of the hippocampus, are fatally injured by as little as 10 minutes without oxygen.

However, the injured cells do not actually die until hours after resuscitation.

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Hope this helps!!!
~Alkka♥


4 0
3 years ago
In the Florida map shown below, use the law of superposition to determine which rocks are oldest? Map of Florida identifying fou
tatiyna

Answer:

The answer is A

Explanation:

You can tell that rocks are older or younger depending on if other layers overlap. B is the oldest because all the others cover it, C is the second youngest because D and A overlap it. From what I could tell, when I took the test, it was either A or D, neither overlap each other so I was not sure so I guessed A and got it right. Though it could be looked at that A is smaller than D since its still growing and building.  

3 0
2 years ago
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