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Sunspots appear dark (in visible light) because they are much cooler than the rest of the surface of the Sun. However, even though they appear dark, they are still very hot.
Answer: See explanation
Explanation:
1. The factors that should be considered when evaluating the costs and benefits of a new innovative process include the cost to build, the effort and time to implement and the maintenance and recurring costs. Therefore, the correct options is D. I, II and III.
2. The factors that will contribute to a measurement of environmental quality is the Salinity levels. Therefore, the correct option is C.
3. If all the other costs and benefits are equal, then the product that will be recommended will be option A "Product 1 because it requires less monitoring, reducing the overall cost"
Since Product 1 requires monitoring once in three months while Product 2 requires monitoring once every week, then we can deduce that product 2 will increase the overall cost.
4. The option that describes the relationship between human population size and resource use is option A "Countries with high populations are likely to use more resources".
When there's an increase in population, the people will make use of more resources when compared to an area with lesser population. Therefore, the correct option is A
Answer:
Option A, Saliva
Explanation:
a.) Saliva = watery fluid, secreted into the mouth by the salivary glands, that functions in the tasting, chewing, and swallowing of food.
b.) Mucus = a thick liquid produced inside the nose and other parts of the body.
c.) The Tongue = the large, soft piece of flesh in the mouth that you can move, and is used for tasting, speaking.
d.) The Epiglottis = a thin cartilaginous flap that covers the entrance to the larynx during swallowing, preventing food from entering the trachea.
Hope this helps!