Answer:
The answer is osteoporosis
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<h2>Answer:</h2>
The correct answer is option C which is The light reactions harvest ___ <u>energy____</u>, while the carbon reactions produce<u> __carbohydrates_____.</u>
<h3>
Explanation:</h3>
- The light dependent reaction is the first part of photosynthesis.
- In the light energy energy is captured and used to break a water molecule into hydrogen ans oxygen ions with free electrons.
- These electrons move into a electron transport chain lean to dark reaction.
- Energy from these electrons is used in the dark reaction to produce carbohydrates from the CO2 and H2O and energy from the light reaction.
 
        
        
        
Answer: it is D : their motion increases
Explanation: because as heat is increased it causes the particles to gain more kinetic energy making them move faster thus increasing their motion and leading to more successful particle collision .
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Answer:
Matter in an ecosystem: 
- must be continuously replenished
- is recycled and reused
-  is returned to the earth by decomposers 
 
        
                    
             
        
        
        
The heart’s electrical system is responsible for making and conducting signals that trigger the heart to beat. These signals cause the heart’s muscle to contract. With each contraction, blood is pumped throughout the body. This happens 24/7 without us having to monitor it all the time so that our heart does not stop.