<span>The hydrologic, rock, and tectonic cycles are all interconnected. In the rock cycle, water moves regolith during erosion, and the tectonic cycle resurfaces rock through uplifting.The hydrologic, rock, and tectonic cycles are powered by the sun and by the Earth’s interior, the core.</span>
        
                    
             
        
        
        
Answer:
1. While there is no cure for Alzheimer's, there are medications to help temporarily improve symptoms. 
2. The most recent research is/was the research on the drug sargramostim, (AKA Leukine), It's thought that the drug may stimulate the immune system to protect the brain from harmful proteins.
hope this helps :)
 
        
             
        
        
        
Answer:
It is an acute effect of a toxin in the lake
Explanation:
 
        
                    
             
        
        
        
Cross over is the first  way genes are shuffled to give rise to genetic diversity. Cross over takes place in sexual  reproduction.  The normal way that cross over occurs is chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other.
If they break the pieces at the same locus in the sequence of base pairs, the result is an exchange of genes called  genetic recombination and it ensures that the daughter cells produced  have a different genetic makeup from the parent cell and thus diversity occurs.