Answer: Human space exploration helps to discuss questions about our place in the Universe and the history of our solar system. Through addressing the challenges related to human space exploration we expand technology, create new industry, and help to foster a peaceful pro with other nations. 
 
        
             
        
        
        
Answer:
All—yeast, euglena, and paramecium—exhibit heterotrophic mode of nutrition.
Explanation:
Yeast needs to feed on subtrates (or substances) like sugars, euglena can make its food like plants do and also feeds on other food sources, while paramecium feeds on bacteria often.
 
        
             
        
        
        
Clean energy like solar wind and water
        
             
        
        
        
Answer:
We determined that if phosphorus is provided at the required level of 0.33%, the optimal ratio of calcium to phosphorus is 1.39:1 or 1.25:1 to maximise daily gain and gain-to-feed, respectively. To optimise bone ash, which is important for breeding sows, the ratio is 1.66:1,” 
Explanation:
 
        
             
        
        
        
There are different kinds of Healthcare system. The true statement about hospitals in the United States is that Hospitals are owned and operated as governmental or not-for-profits institutions but they are not owned by for-profit corporations.
U.S. Healthcare coverage is known to be divided into 2 part. They are;
-  Public healthcare (government-funded) 
- Private healthcare (privately-funded)
Hospitals often offer basic care to the sick. They treat illness and do simple surgery. Their work includes removal of gallstones etc. The hospitals are not set up to make profit but too help people.
Learn more about Hospital from
brainly.com/question/6610493