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Natasha_Volkova [10]
4 years ago
9

20. Why do you see a baseball flying through the air before you hear the crack of the bat hitting it?

Biology
1 answer:
wel4 years ago
6 0
C. Light travels faster than sound
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Which statements are true about a stable community?
UNO [17]
B.the population of the species are reasonably constant over time
4 0
3 years ago
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Some types of fish can generate an electric field around their body to communicate with other individuals of the same species (l
olchik [2.2K]

Answer:

D. physiological mechanisms are the basis of behaviors.

Explanation:

The example of the development of electric fields as part of the communication between some fish, shows the interrelation that exists between physiology and behavior. This physiological factor that fish have has an impact on their behavior. However, it is necessary to recognize that physiology does not act by itself, but needs to receive a stimulus from the surrounding environment. This way of communicating is called  electrocommunication, a fish generates through its physiology an electric field and a second individual receives that electric field with its electroreceptors.

6 0
3 years ago
Dr. Nachman and his colleagues collected rock pocket mice across 35 kilometers of the Arizona Sonoran Desert, which included bot
vlada-n [284]

Answer:

1)

  • frequencies of light-colored mice  ≅ 0.74
  • frequencies of dark-colored mice ≅ 0.26

2)

  • frequencies of light-colored mice ≅ 0.13
  • frequencies of dark-colored mice ≅ 0.87

3)

  • q² = 0.74
  • p² = 0.02
  • 2pq = 0.24      

4)

  • q² = 0.13
  • p² = 0.4
  • 2pq = 0.46

5)

The dark-colored fur seems to have the greatest overall selective advantage

6)

Dark lava, that changed the color of the substrate, from light to dark.

7)

Because to produce dark color, animals from the different regions suffered different mutations that drove them to have almost the same dark fur color. All of the animals are inhabiting dark substrate, which means that this environmental condition is favoring the same phenotype.

8)

To see if the mice population is evolving, you need to take a sample of animals per year, through many years, and analyze if it is changing or not. If the population is evolving, you will notice a change in the allelic and genotypic frequencies over the years, favoring one genotype or the other. If the population is not evolving, the frequencies will keep equal through the years, it will not change.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

Download pdf
8 0
3 years ago
The following is a list of the vessels that blood passes through from the heart back to the heart.The correct order in which blo
slamgirl [31]

Answer:

elastic arteries, muscular artery, arterioles, capillary, venules, medium veins, large veins,

Explanation:

There are three types of blood vessels a) arteries b) capillaries and c) Veins. Arteries are responsible for carrying blood from heart to all other parts of the body. The arteries arising from heart are large in size which then keep on branching and becoming small enough for cellular exchange.  

Capillaries are intermediary to veins and the arteries as they allow exchange of nutrient and release of waste product to and from from cells.  

Lastly, veins carry deoxygenated blood from organs to the heart. Vieins become larger in size as they get close to heart.  

Hence, the correct order is  

elastic arteries, muscular artery, arterioles, capillary, venules, medium veins, large veins,

5 0
4 years ago
What is the difference between simple diffusion and facilitated diffusion?
denis-greek [22]

Answer:

Simple diffusion is when the particles travel through the cell and facilitated diffusion is when the molecules travel through the cell.

5 0
3 years ago
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