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a_sh-v [17]
3 years ago
8

Sound waves in waves. sound waves cannot travel through

Biology
2 answers:
Usimov [2.4K]3 years ago
3 0
They cannot travel through a vacuum
Alex Ar [27]3 years ago
3 0

Answer:

Vacuum

Explanation:

Sound waves are usually defined as longitudinal waves that are characterized by the motion of the particles parallel to the direction of wave propagation. This sound wave can travel only through the medium such as air and water. But they cannot travel through a vacuum. It is because there is no particular medium in space through which sound could propagate and the pressure in the vacuum is extremely low, much lower than the normal atmospheric pressure, due to which any type of particles present in space are not being affected by any type of processes.

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Coal is made from the remains of dead plants. It is made of carbon and other elements. Is coal a mineral?
BabaBlast [244]

Answer:

Yes, because is contains carbon

Explanation:

Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.

7 0
3 years ago
You cross two red griffins with blue eyes and produce offspring that are: red with blue eyes, red with green eyes, white with bl
sergejj [24]

Answer:

The reason for the offspring to present these genotypes is that during the formation of the gametes, the alleles separate and are inherited independently, therefore they can generate several different phenotypic combinations.

Explanation:

In order for an offspring to present very different phenotypes, as shown in the question above, it is necessary that the two red griffins with blue eyes that were crossed are heterozygous. Thus it will be possible for the offspring to present a wide variety of phenotype, according to Mendel's second law.

Mendel's second law is called the Law of segregation. This law explains that the alleles (which determine the characteristics of individuals) are separated in the formation of gametes and inherited by the offspring of a cross independently, and can generate different combinations of phenotypes, when the parents of a cross are heterozygous.

8 0
3 years ago
The work output of a machine divided by the work input is the ____ of the machine
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