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maw [93]
3 years ago
10

Which one of these compound machines does NOT have a wheel and axle? A. bicycle B. zipper C. wheelbarrow D. tape dispenser

Biology
2 answers:
Zigmanuir [339]3 years ago
7 0
Hello!

If you look at a zipper, you'll see that it doesn't have a wheel or an axle. A zipper links the <span>protruding teeth that the zip contains. Your answer would be B!

You can feel free to let me know if you have any questions regarding this!
Thanks!

- TetraFish</span>
Blababa [14]3 years ago
3 0
Zipper, because it's two inclined planes that form into wedges rather than being a wheel and axle.
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In the amoeba, water input and output are controlled by the _____.
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Vacuole. Amoeba is a unicellular organism formerly grouped under Kingdom Protista. Amoeba in freshwater need contractile vacuole to control input and output of water. (osmosis). Without this structure, ameboid cells will be filled with water and eventually burst.
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Term referring to the process in which certain compounds increase in concentration within biotic tissues as they move up through
melisa1 [442]

Answer:

a. Biomagnification

Explanation:

Biomagnification is the name given to the progressive accumulation of substances from one trophic level to another along a food chain. Thus, the substance will have its highest concentration in individuals who occupy trophic levels furthest from producers.

For biomagnification to occur, substances must be fat soluble (lipid soluble) and thus adhere to living tissues. Another feature of substances that undergo biomagnification is that they are generally not biodegradable or metabolized by the body.

The phenomenon is quite common with heavy metals (lead; mercury) and certain chlorinated and aromatic organic compounds with higher molecular mass, such as the insecticide DDT.

3 0
3 years ago
Which of these is the correct amino acid chain produced from the DNA template strand? F Arginine -Leucine -Proline -Asparagine -
Lostsunrise [7]

Answer:

Arginine - Leucine - Proline - Asparagine - Lysine - Arginine

Explanation:

6 0
3 years ago
Please help me with these!
TEA [102]

Answer:

A. cm .5 mm5

B. cm 3.3 mm33

C. cm 5.5 mm 55

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Explanation:

you would move the decimal point over to the right one time because centi come before mili.

5 0
3 years ago
Read 2 more answers
HELPPPPP :p
Goryan [66]

Answer:

In a general aspect, humid and warm air moves to lower latitudes or in altitude, losing heat and getting colder. Its humidity condenses and causes precipitation. Depending on the air movement there are different kinds of rain.  

Explanation:

At a global level, it occurs unequal warming of the atmosphere, which depends on many factors and varies with latitude. This occurs because solar radiation reaches the earth differently at different latitudes, resulting in big convective cells of atmospheric circulation: Hardley cell, Ferrel cell, and Polar cell.    

A convective cell is the movement of the humid air among different latitudes. Air moves from higher latitudes to lower latitudes, getting warm, getting less dense, and ascending. As the air gets higher in altitude, it´s density and pressure decrease, so the air tends to expand with elevation in response to the reduced pressure. Gases in expansion experiment adiabatic cooling, losing caloric energy as their molecules move getting farther away from each other. As the air gets higher, it gets colder, and hence, denser. The result is that descends again. Humidity gets denser and precipitates.

• Rain is controlled by temperature on the earth´s surface, atmospheric global air circulation, the position of the mountains and oceans, closure to the oceans.  

• There are different kinds of precipitations according to their origin.

<em>i. Convective precipitation: </em>These are the most typical ones. Air gets warmer and less dense, elevating in altitude with humidity. On the way, it starts to get colder, and the humidity condenses, resulting in precipitation. Depending o the degree of condensation, the precipitation might be in a liquid state (rain), semisolid-state (snow), or solid-state (hail).

<em>ii. Frontal Precipitations: </em>They occur when a polar front coming from higher latitudes collide with a warm front coming from lower latitudes, resulting in a strong rain. This is typical of grasslands or temperate forests (approximately 40 º latitude)

<em>iii. Orographic Precipitations:</em> They occur when humid wind ascends by a mountain range, causing its adiabatic cooling, condensing the humidity, and precipitating.  

7 0
3 years ago
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