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Bond [772]
4 years ago
8

Coal is solid rock that began as organic material that was deposited in a swamp. The formation of coal suggests that A. Geologic

processes continue over millions of years. B. Coal is made mostly of skeletal remains of animals. C. Coal is formed from magma that has solidified over time. D. It quickly becomes petrified when water is removed.
Biology
1 answer:
svetoff [14.1K]4 years ago
5 0
I think it's the answer is C
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The producers in the ecosystem produce 25,000,000 kilocalories per year. How much energy is most likely available to the organis
Svetlanka [38]

Answer:

The correct answer is - 25,00,000 Kcal

Explanation:

The transfer of energy in the trophic level is move with each successive level of the trophic level of the pyramid. Energy transfer takes place in a manner that only 10% of the available energy move to the next level and the rest 90% of energy lost as heat and other processes.

So ith producers produce 25000000 Kcal than only 10 % of this will transfer to the next level or the second level of the pyramid

Producer ---->     primary consumer  ----> secondary consumer

100% energy      10% energy of producer     10% of primary consumer

So, the 10% of 25000000  ----->  2500000

8 0
3 years ago
In mammals, air enters lungs through tubes called _____, which branch into smaller tubules called _____, which extend out to tin
galben [10]
 <span>In mammals, air enters lungs through tubes called _____, which branch into smaller tubules called _____, which extend out to tiny air sacs called _____. 
trachea; bronchioles; spongy tissue 
>> bronchi; bronchioles; alveoli 
bronchi; alveoli; gills </span>
5 0
3 years ago
A star produces energy by:
Andreyy89

Answer:

C

Explanation:

I think... sorry if I am wrong

5 0
4 years ago
explain some of the interactions between air, land, water, and life that transfer energy in and around the globe and contribute
Sauron [17]

Answer:

              Air,water,land,these are the A-biotic factors of the environment and are associated with life in many ways and life is totally defendant on these A-biotic factors of the life

Explanation:

                     Life is basically dependent on two components the biotic (living things) and A-biotic (non living) components of life.Living component are inked to each other with food chain and the energy  is transferred between the food chains and the energy is made by the producer with the help of a biotic factors associated with the life. By using A-boitic component the producers the primary component of the food chain make the food and is consumed by the consumers and then the same way the energy is transferred  from on level to the next level and energy is consumed up to 10 percent  in each level of the food chain.

3 0
4 years ago
Why are standards of mass necessary?
Alex_Xolod [135]
Hello!

Standards of mass are necessary because it is a whole lot easier than using a bunch of different systems. Since the metric system is common, it would be easier to compare something with someone from America and someone from Germany using the metric system as opposed to something otherwise.<span />
3 0
4 years ago
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