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musickatia [10]
3 years ago
14

Which word best describes the tone of the excerpt? A. mysterious B. mocking C. frustrated D. troubled

Biology
1 answer:
Taya2010 [7]3 years ago
5 0

Answer:C. frustrated

Explanation:

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Visual and hearing receptors are irreplaceable, but the taste and olfactory receptors are continuously renewed True False
8090 [49]

The given statement is True.

Visual Receptors: Rods and cones are the two types of cells present in the retal part of eye which works as a visual receptors which establishes a synaptic network involving neurons which connects the receptors to brain and help us in visualizing. However loss of neurons in the retina because of any kind of physical or biological damage permanently cuts the connection of receptors with brain and it cannot be replaced naturally.

Hearing receptors: Inside the ears there is a small structure known as cochlea which contains the organ of corti which further contains the hair cells [sensory cells] working as hearing receptors but research till date concludes that mammalian cochlear hair cells do not regenerate, either spontaneously or after damage.

Taste receptors: The small little bumbs present of our tongue are known as papillae whioch functions as taste receptors as they contain taste buds. Scientifically there taste buds die off and regenerate every few weeks.

Olfactory receptors: These receptors keep on replacing due to continuous differentiation of basal cells which develop and are capable of restablishing the connection with Central nervous system.

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8 0
2 years ago
Jupiter has a similar composition to the sun. Why is the sun a star while Jupiter is not?
irakobra [83]

The correct answer is (b) Jupiter has mass less than that of sun which cannot generate enough pressure which can start hydrogen fusion. Jupiter has similar composition as both are entirely made up of hydrogen and helium. They both differ in the core and mass. The mass of Jupiter is so small as compared that it would not be able to generate enough pressure to start hydrogen fusion. Jupiter's core is made of metallic hydrogen and the core of sun is so hot that the hydrogen splits into electrons and protons. This generates hydrogen fusion.

Thus, Sun a star and Jupiter is not a star.





5 0
3 years ago
What is shaped like elbow macaroni and just as small
Step2247 [10]

Answer:

Small pastas ..

Explanation:

Hope it helps you !!

7 0
3 years ago
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4. How do geologists determine the age of a fault line
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<span>Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the geologic time scale and dating of formations and rocks relies upon two fundamentally different ways of telling time: relative and absolute.</span>
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Mitochondria (singular - mitochondrion)
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