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sukhopar [10]
3 years ago
10

You call to a friend from a boat floating in the ocean. Which best describes the changes in the speed of the sound waves as they

move from you to below the surface of the ocean?
The speed of sound is faster in the water than in the air.
The speed of sound is faster in the air than in the water.
The speed of sound does not change as it moves through the air or water.
The speed depends on how loud you yell.
Biology
1 answer:
Alina [70]3 years ago
8 0

The correct answer is: The speed of sound is faster in the water than in the air.  

The speed of sound is different between those two mediums because they have different densities. Since, water is denser than air, more energy is required to generate a wave but once it stars, it travels faster than it would do in air. Sound waves’ travel can be presented by particles that transmit the energy one to another as they bump. The sound speed is lower in the air (than in water) because particles are far apart, so they travel further before they collide.

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Describe hydrogen bonding
snow_tiger [21]

A hydrogen bond is the electromagnetic attraction between polar molecules in which hydrogen is bound to a larger atom, such as oxygen or nitrogen. This is not a sharing of electrons, as in a covalent bond. Instead, this is an attraction between the positive and negative poles of charged atoms.

Hope this helped :)

3 0
3 years ago
Which of the following does the enzyme primase synthesize?
kenny6666 [7]

Answer:

RNA primer

Explanation:

the DNA polymerase can't synthesize DNA without an 3' ending, the primase enzyme synthesize an RNA primer that brings to the DNA polymerase the 3' spot so she can finally starts the new DNA chain.

5 0
3 years ago
Most animals with backbones, vertebrates, have a similar body plan: skull, ribs, two pairs of limbs, tail. What does this sugges
daser333 [38]

The correct answer is E. Vertebrates are all related to a common ancestor

Explanation:

According to biology and evolution, organisms from different species but that share similarities in morphology (body structures) as well as in genetics often have a phylogenetic relationship which means they descend from the same organism or share a common ancestor. This applies to multiple taxonomical levels including classes such as mammals or birds as it has been proved each of this derived from a common ancestor. Therefore, the similarity in the body structure (morphology) in all mammals suggest vertebrates are related to a common ancestor and as they evolved from this, they share similarities not only in terms of morphology but also in genetics.

3 0
3 years ago
Read 2 more answers
animals cannot produce enzymes to digest cellulose, yet many termite species consume cellulose from plant material as a main par
dimaraw [331]

Answer:

Termites have cellulose-digesting protists in their guts.

Explanation:

Termites are able to access nutrients contained in cellulose due to their mutualistic association with some cellulose-digesting protists such as <em>Trichonympha</em> and M<em>ixotricha</em>. The protists produce cellulase in addition to other glycolytic enzymes that work together to convert cellulose to malate.

The malate produced is further metabolized to produce CO_2, hydrogen, acetate and energy in the form of ATP.

The protists get sheltered in the termite's gut in return.

8 0
3 years ago
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mamaluj [8]
Hydrogen,ammonia,methane,water
5 0
3 years ago
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