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hoa [83]
4 years ago
6

Mr. Fuller assigned his science class a lab comparing the masses of objects to the nearest gram using a balance. The mass of a p

aper clip is about 1 gram. How many paper clips will it take to balance the scale, if it is determined that a 1 centimeter cube of gold has the mass of 19.3 grams?
A) 9
B) 18
C) 19
D) 20
Biology
1 answer:
AleksAgata [21]4 years ago
6 0
D) 20 should be correct

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Dead zones in waterways can occur as the result of fertilizer runoff. Please select the best answer from the choices provided T
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The statement is true. Dead zones are the zones of oxygen depletion, which is caused by excessive running off of the fertilizers into the water body. These chemicals, particularly the nitrates, which are used by algae etc. which bloom by using the nitrates and use the oxygen present in the water. When they die, oxygen levels become critically low till then, for other aquatic animals like fishes etc., to survive. 
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Sophie says dolphins and sharks look very similar, so they must be related. Jake disagrees, saying DNA evidence has shown that d
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Answer:

Both are correct

Explanation:

The modern system classifies organisms into eight levels: domain, kingdom, phylum, class, order, family, genus, and species. The scientific name given to an organism is based on binomial nomenclature.

The "traditional" system relies on Linnean classification (what looks similar between the the two species.

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Cellulose-digesting microorganisms live in the guts of termites and ruminant mammals. the microorganisms have a home and food, a
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Answer:

Cellulose-digesting microorganisms live in the guts of termites and ruminant mammals. the microorganisms have a home and food, and their hosts gain more nutrition from their meals. this relationship is an example of mutualism.

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"Explain how and why de-oxygenated blood is pumped to the lungs and is then returned to the heart were the blood now rich with o
Jlenok [28]
<h2><u>Heart and lungs:</u></h2>

The upper chamber of the heart is called atrium and lower chamber of the heart is called ventricles.

The blood circulation in the heart is basically under the functioning of three blood vessels namely:

<h3><u>Arteries: </u></h3>
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  • Veins divert oxygen-rich blood from the heart to the majority of the body's tissues.
  • They branch a few times, decreasing and littler as they convey blood more remote from the heart.
<h3><u>Capillaries: </u></h3>
  • These are little; flimsy blood vessels that associate the arteries and the veins.
  • Their dainty dividers permit oxygen, supplements, carbon dioxide, and other waste items to go to and from our organ's cells.
<h3><u>Veins: </u></h3>
  • These are the blood vessels that return blood to the heart; this blood needs (oxygen-poor) and is wealthy in waste items that are to be discharged or expelled from the body.
  • Veins become bigger and bigger as they draw nearer to the heart.
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Positive feedback *
WITCHER [35]
C. it cant be a since it exist
5 0
2 years ago
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