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Nookie1986 [14]
4 years ago
6

What does it mean when molecule is said to be polar

Biology
1 answer:
Stels [109]4 years ago
5 0

It means that it has an unevenly distributed electrical charge.

hope this helps :)

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I NEED AN HONEST ANSWER, PLS HELP!
Verizon [17]

Tendons :may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure. A ligament: is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.


7 0
3 years ago
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Explain how fossils provide to evidence to support the theory of the continental drift.
grigory [225]
I know that you can think of some thing.


<span>Fossil evidence helped prove the theory of continental drift because similar fossils could be found on separate continents, in rocks of roughly the same age, surrounded by layers that matched each other, and in some cases, found nowhere else in the world.

Examples include Mesosaurus and Lystrosaurus. Both are reptiles found in places now separated by oceans. Neither could have swum such great lengths across salt water.

Another example includes the plant Glossopteris, a fernlike plant from about 250 million years ago. That plant has been found in small areas in Africa, South America, Australia, India, and Antarctica, all in small sections that lined up in Alfred Wegener's (the guy who developed the theory of continental drift) view of the supercontinent Pangaea. It should be note that those other fossils also lined up too. Glossopteris has a seedlike structure to it that was too large to be carried such great distances by wind and not strong enough (too fragile) to survive a trip by water. You ask what about birds? That's quite a distance for a bird to travel while carrying a large seed.

All of this together, along with evidence from landforms that matched up just like the fossils, and evidence from climate helped convince Wegener that continental drift had happened.
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4 0
4 years ago
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Compare and contrast fermentation and cellular respiration (at least 2 similarities and 2 differences explained in detail).
professor190 [17]
They're similar because they're both methods the cell uses to make ATP. ... Fermentation takes place without oxygen (also known as anaerobic), so less ATP is produced from each molecule of glucose. Another difference is that the byproducts of cellular respiration are always water and carbon dioxide.

I hope this helps
8 0
4 years ago
Which characteristics can be used to differentiate star systems?
Sergio039 [100]

in the stars are three main system so I shall say the difference is that they are not in right position

5 0
3 years ago
Draw the phases of mitosis of a cell that contains four chromosomes as its diploid or 2n number
anastassius [24]

Answer:

Please find the diagram attached and explanation below.

Explanation:

Mitosis is a type of cell division that forms two genetically identical cells. It involves four stages viz; prophase, metaphase, anaphase, and telophase.

Considering a diploid (2n) cell with four (4) number of chromosomes.

Prophase- four duplicated chromosomes condense and pair up.

Metaphase- four chromosomes line up at the cell plate or equator in order to get separated.

Anaphase- the sister chromatids are pulled apart by the spindle microtubules

Telophase: the chromosomes recoil and organelles form at opposite poles of the cell.

At the end of cytokinesis, which is division of the cytoplasm, four chromatids are present in each daughter cell. The chromatids becomes individual chromosomes that retain the diploid (2n) chromosome number of four.

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3 years ago
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