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svp [43]
2 years ago
11

Hello there! I'm not quite sure of the answer, can someone help me? Much appreciated. Brainliest to whom answers first and corre

ct! ​

Biology
1 answer:
kaheart [24]2 years ago
4 0

Answer:

Air is the correct answer

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I will Give Brainliest To Whoever Gets This Right!!!!!!!!!!!!!!!!!
patriot [66]

Answer:

It's too hard

Explanation:

do you go to school. What grade/year are you in?

3 0
3 years ago
About how much energy is lost with each transfer from one trophic level to the next?
MatroZZZ [7]

Answer:

C. 10%

Explanation:

Hope this helps.

5 0
2 years ago
Some homeostatic imbalances cause a variable that is normally controlled by negative feedback to be abnormally controlled by pos
tigry1 [53]

Answer:

True

Explanation:

Some deviations from normal homeostasis activate the positive feedback loops to control the conditions which are otherwise regulated by negative feedback mechanisms.

For example, the blood levels of respiratory gases and H+ ions are regulated by a negative feedback system via chemoreceptors. The increased partial pressure of carbon dioxide gas and lowered pH or lowered partial pressure of oxygen in the blood are sense by central and peripheral chemoreceptors which in turn activate the neurons of the dorsal respiratory group (DRG).

The activated DRG triggers an increased in the rate and depth of the breathing to facilitate the inhalation of more oxygen and exhalation of CO2 to restore the normal levels.  

However, hypocapnia inactivates the chemoreceptors and does not allow negative feedback to restore the normal CO2 levels in the blood.  

Under such conditions, the positive feedback loop stimulates the DRG neurons more strongly in response to the increased partial pressure of CO2 above the normal levels than when the partial pressure of oxygen falls below the normal level. These dangerously lowered oxygen levels may also cause fainting.  

5 0
3 years ago
Because she is so active, cardiovascular fitness is important to Vicky. She learns that hemoglobin is an important globular prot
vaieri [72.5K]

The answer is Iron, this is the important mineral that she needs to obtain as this will help her in her ways to cardiovascular fitness as this mineral helps the hemoglobin to build in her body and for her t be able to get enough nutrients.

5 0
3 years ago
Read 2 more answers
If you found a fossilized dinosaur bone, what method could be used to determine the age of the fossil?
allochka39001 [22]

Answer:

Radiometric dating for the analysis of isotopes in the fossil.

Explanation:

Radiometric dating can be used to determine the precise age of a fossil by measuring isotoped decay within tge fossil or the surrounding rock in contact with it.

6 0
3 years ago
Read 2 more answers
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