Cells are organized into tissues, which are then organized into organs, and are finally organized into organ systems. 
Systems are composed of different organs working together to carry out a common function or purpose. For example, the stomach, pancreas, intestines, are organs that are part of the digestive system, which breaks down the food we eat to give nourishment to our body. 
Similarly, organs are made up of similar tissues carrying out a common function, and tissues are made up of cells of the same kind or type, also carrying out a common function or purpose. 
        
             
        
        
        
Answer:
<h3>Over time, the lighter colored moths will become more common while the darker colored moths will become less common. Eventually, the dark moths could become extinct or less dark colored traits will be passed on.</h3>
 
        
             
        
        
        
Some fun fact to me is that you can compare the cell to a factory - I always found it interesting. So the nucleus would be like the CEO, and the  Endoplasmic Reticulum (ER) is like an assembly line - it's actually quite similar to a line like this!. And Ribosomes are the workers on this line.
        
             
        
        
        
Answer:
Cancer is a disease in which abnormal cells divide uncontrollably and destroy body tissue.
Explanation:
Cancer is caused by gene mutations, which are sometimes caused by inherited gene mutations (ones you are born with), or mutations that occur after birth (i.e smoking, being overweight, chronic inflammation, viruses, cancer-causing chemicals (carcinogens), hormones, and lack of exercise.)
Your habits (drinking alcohol frequently etc. )
And family history are the main influences of cancer.
However, inherited cancer is usually rare. 
Hope this helps!!!
I used to study medicine and so I know a lot about this.
 
        
                    
             
        
        
        
Answer:
A meteorological phenomenon
Explanation:
A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing as a circular arc in the sky. It is often visible after rainfall due to highly humid atmosphere and absence of air pollution.
I Hope This Helps!!!!!