the role of plants in carbon cycle 
Explanation:
the amount of CO2 found in the atmosphere varies over the course of a year. much of this variation happens because of the role of plants in carbon cycle...respiration occurs all the time, but domains during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.
 
        
             
        
        
        
Baking soda needs to be added for the yeast to rise up
        
                    
             
        
        
        
Plasma is the fourth state of matter. Plasma is an ionized gas, a gas into which sufficient energy is provided to free electrons from atoms or molecules and to allow both species, ions and electrons to coexist.
        
             
        
        
        
Hi , cytoplasmic streaming is actually circulating around in the cell . It moves and by doing do it can help move organelles and harmful/helpful chemicals to where they need to be in the cell , so that's why cytoplasmic streaming is also called active mass movement of cytoplasm. 
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Answer:
Controlled burns can minimize insects and disease and improve the habitat for threatened and endangered animal species. Prescribed burns provide key nutrients to soil, which help trees and vegetation flourish. These controlled forest fires also open up the tree canopy to allow sunlight into the forest 
Explanation: