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lakkis [162]
3 years ago
12

1. Which of the following is NOT a result of convection current? a) The air in a room is cooled by an air conditioner b) Wind bl

ows towards the beach from the sea. c) The water in a kettle is heated and boils d) The wax covering an iron rod melts when the rod is heated.
Biology
2 answers:
Paladinen [302]3 years ago
7 0

The answer is D. This is a result of conduction, which is when heat is transmitted through a solid, while the rest of the options are examples of convection.

Reptile [31]3 years ago
4 0

Answer:

its D

Explanation:

because conduction happens through solids and the others are obviously conventional current

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5. Which one of the following steps comes first during the investigation of an
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Analyze and describe the different types of genetic mutations and their effects. then discuss, in detail, the role played by dna
mrs_skeptik [129]
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UkoKoshka [18]

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6 0
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Protists are very diverse, and many different classification schemes have been used to define relationships between the protists
andrey2020 [161]

Answer:

D. heterotrophic by ingestion, pseudopods

Explanation:

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Their mode of nutrition can be photosynthetic or hetrotrophic. Hetrotrophic  protists   can be divided into  phagotrophs and osmotrops/saprotrophs. The phagotrophs  makes use of the cell body to engulf the food materials as  in amoeba ,carry out extracellular digestion before swallowing it.

Osmotrops absorbed dissolved food from surrounding liquid environments directly. (Some photosynthetic protists can also be heterotrophic.

Amoeboid movement is the mode of locomotion of protists and some  other eukaryotes. It involved the protrusion of cytoplasm, which exert pressure on the cell membrane to form pseudopodia and  the posterioly  evolved  <u>Uropods. </u>

<u />

<u>  </u>

<u>Sol-gel theory has been proposed to expalin this movements, The ectopalsm of amoeba is gelly-like , while the endiplams is less viscpus   and said to be sol. The interchange of the cytoplasmic fluis between the endo-and ecto plasm gives the SOL-GEL propulsion of the protopalms for the amoebic moveemnts .</u>

<u />

<u>The false feet(psuedopodium) drags the amoeba  along in the direction of the flow of the cytoplasm.</u>

Therefore option D is  the right option

4 0
3 years ago
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