Answer:
A circuit is a closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the circuit. Generally, there is some appliance that uses electricity in the circuit. The appliance may, for example, provide light or heat or mechanical energy.
Explanation:
That substance was most likely parathyroid hormone.
<h3>What is a parathyroid hormone?</h3>
It should be noted that the parathyroid hormone is the hormone that is released to control calcuim levels in the blood.
In this case, this is illustrated as the blood calcium levels were above normal and the pathologist found cancer cells that produced a hormone-like substance.
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The best and most correct answer among the choices provided by your question is the third option or letter C. RNA carries genetic information.
RNA acts as a messenger between DNA<span> and the protein synthesis complexes known as ribosomes, forms vital portions of ribosomes, and acts as an essential carrier molecule for amino acids to be used in protein synthesis.</span>
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Answer:
Extraction of oil from tar sands is not economically feasible.
Explanation:
<span>Characteristics that mentioned biomes have in common are:
- They are all forests, dominated by trees and other woody vegetation.
- They inhabit animal life with great microbial diversity.
- They all have big carbon sinks.
Still, trees different in a number of ways in these three biomes:
- </span><span>Tropical rainforest: Trees are evergreen and have large green leaves. Canopy is multilayered and dense, so there is a little light in the forests.
- </span><span>Temperate deciduous forest: Trees are deciduous, leaves are lost annually. Canopy is moderately dense, so there is more light than in tropical rainforests.
- </span><span>Boreal forest: Trees are evergreen conifers with needle-like leaves. Canopy is thick and permits low light penetration.</span>