The features or characteristics  of organic compounds include:
1. They contain covalent bonds and are mostly non polar in nature
2. Have lower boiling and melting points than inorganic compounds
3. Many organic compounds are thermally unstable, They decompose  into simpler molecules when heated at fairly  high temperatures
4.  Most organic compounds are inflammable and burn exothermically in sufficient air  to yield carbon dioxide, water and heat energy.
5. Most organic compounds being largely non polar are  insoluble in water.
 
        
             
        
        
        
To describe a scientist as skeptical, they question existing ideas and a new hypothesis. skepticism is a valuable quality because it shows that scientists is good and open minded.
i hope this helps...
        
             
        
        
        
Mannan-oligosaccharides (MOS) are prebiotics composed of complex carbohydrate molecules, derived from the outer cell wall of S. cerevisiae, whose main components, β-glucans (mannoproteins), are known as elements capable of activating the immune system of animals [3, 5]. :D
        
             
        
        
        
Answer:
i have trusted my best to answer 
Explanation:
Edit
The upper mantle of Earth is a very thick layer of rock inside the planet, which begins just beneath the crust (at about 10 km (6.2 mi) under the oceans and about 35 km (22 mi) under the continents) and ends at the top of the lower mantle at 670 km (420 mi). Temperatures range from approximately 200 °C (392 °F) at the upper boundary with the crust to approximately 900 °C (1,650 °F) at the boundary with the lower mantle. Upper mantle material which has come up onto the surface is made up of about 55% olivine, 35% pyroxene and 5 to 10% of calcium oxide and aluminum oxide minerals such as plagioclase, spinel, or garnet, depending upon depth.
 
        
             
        
        
        
I am blue. 
Not a smurf. 
But a blue delinquent from RobIox Arsenal (random poem btw)