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mezya [45]
3 years ago
12

I bet you have watched astronauts in the space station on television or on your computer. We see them; we hear them speak. How a

re the voices of astronauts transmitted back to Earth? A) sound waves B) transverse waves C) mechanical waves D) longitudinal waves
Biology
1 answer:
Elena L [17]3 years ago
8 0
The only way to send information back and forth is to use radio waves. Just like a radio station broadcasts a signal which you can listen to using a radio, astronauts and people on Earth can broadcast information back and forth to each other.
Radio waves are transverse waves.
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Name the three major internal parts of the plant stem and identify their functions
Nat2105 [25]

Answer:

The three major internal parts of a stem are the xylem, phloem, and cambium. The xylem and phloem, as mentioned before, are the major components of a plant's vascular system. The cambium is a meristematic tissue, which means that it is a site of cell division and active cell growth.

Explanation:

6 0
3 years ago
Compare the normal allele for hemoglobin with the sickle cell allele. How does this difference affect the person’s red blood cel
Readme [11.4K]

Answer:

Sickle cell anemia is an inherited condition in which there aren't enough healthy red blood cells to carry oxygen through an individual's body. The red blood cells of a healthy individual are flexible and round, and they move through blood vessels with no problem, transporting oxygen successfully. However, a person with sickle cell anemia has rigid, sticky red blood shaped like sickles or crescent moons. These cells often get stuck in small blood vessels, which can slow or block blood flow and oxygen delivery to different parts of the body.

The sickle cell anemia trait is found on a recessive allele of the hemoglobin gene, while the regular red blood cell trait is found on the dominant allele. This means that a person must have two copies of the recessive allele (one from their mother and the other from their father) to be born with this condition. People who have one dominant and one recessive allele or both dominant alleles will have healthy red blood cells.

3 0
2 years ago
Ocean-dwelling chemoheterotrophic bacteria that generate energy via aerobic respiration are dependent on the presence of photoau
galben [10]
Because, photoautotrophs serves as their carbon sources.
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6 0
3 years ago
The gastrovascular cavity differs from the alimentary canal in that only the gastrovascular cavity _____.
wlad13 [49]
The answer is single opening. The gastrovascular cavity varies from the alimentary canal in that only the gastrovascular cavity has only a single opening. In addition, an alimentary canal has two openings and food moves over it unidirectional. The gastrovascular cavity is a construction establish in primitive animal phyla. It is accountable in cooperation with the digestion of food and the transportation of nutrients all over the body.
3 0
2 years ago
What receives blood from the head
Ahat [919]

Answer:

Right Atrium

Explanation:

ion really know but sounds like a

Right Atrium/Heart typo answer

6 0
3 years ago
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