A long-haul commercial jet covers the 12,450 km from Beijing to Mexico City in 13.5 hours. What is its average speed?
Answers
Answer: 256.2 m/s (meters per second)
Explanation: Distance covered is 12450km and time used is 13.5hours. We first convert these values to standard units for distance (meters) and time (seconds).
12450 km = 12450 x 1000 m = 12,450,000 m
13.5hours = 13.5 x 60 x 60 = 48,600s
Average speed =
The average speed of the jet is 256.2m/s
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Genes that control feather color in some animals are expressed differently in the winter than in the summer. How might such a difference be beneficial to the ptarmigan bird?
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Saltwater is denser than freshwater what ecosystem would be most affected by this fact
Answers
If one population, such as let's say a hawk decreases the niche or the importance of an animal It could directly or indirectly affect the physical conditions and any population.
How does a population affect the ecosystem?
The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels, and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials, and greenhouse gases.
What is one population in your ecosystem?
Members of the same species that live and interbreed with one another in the same habitat comprise a population. Multiple populations of different species can exist and interact together as a community.
Learn more about one population affects an ecosystem at
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The given statement, "Human movement involves the complex interplay of many body systems." is true. Human movement is a complex process that requires the coordination and interaction of multiple body systems. These body systems include the muscular system, skeletal system, nervous system, and cardiovascular system, among others.
The muscular system plays a vital role in movement by generating force and facilitating the contraction and relaxation of muscles. Muscles work in pairs, with one muscle contracting while the opposing muscle relaxes, allowing for controlled movement. This interplay of muscles is necessary for various movements, such as walking, running, and lifting objects.
The skeletal system provides structural support and serves as the framework for movement. It consists of bones, joints, and connective tissues. Bones act as levers, while joints allow for flexibility and facilitate different types of movement, such as bending, rotating, and extending.
The nervous system is responsible for controlling and coordinating movement. It receives and processes sensory information, sends signals to muscles to initiate movement, and regulates the speed and force of muscle contractions. The brain and spinal cord are integral components of the nervous system, playing a crucial role in coordinating complex movements.
The cardiovascular system, composed of the heart, blood vessels, and blood, transports oxygen and nutrients to the muscles involved in movement. It also carries away waste products, such as carbon dioxide, generated during muscular activity. Adequate blood flow and oxygen supply are essential for optimal movement and performance.
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hope this helps if not just let me know
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When a factory is emitting large amounts of CFCs into the atmosphere, it affects the people in that area by the increase in the level of ocean water. CFCs dissolve in seawater and because they are not reactive, they just circulate until it becomes saturated.
A factory that is emitting large amounts of CFCs into the atmosphere might affect people by the increase in the rate of skin cancer.
What are Chlorofluorocarbons?
Chlorofluorocarbons (CFCs) are substances carbon, chlorine, hydrogen and fluorine, which may harm the ozone layer.
- The ozone layer is the main protective layer against ultraviolet rays (UV) that may cause cancer.
In conclusion, a factory that is emitting large amounts of CFCs into the atmosphere might affect people by the increase in the rate of skin cancer.
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Answers
Answer:
Genetic variation
Explanation:
Darwin studied that different populations of finches on Galapagos island that are descended from the same species. Some species are evolved to eat nuts and large seed, some eat small seeds and some feed on insects and nectar.
So genetic variation occurred in different populations of finches which enabled them to bring changes in their beak according to the food resource they have chosen to feed on.
So in Darwin's finches, genetic variation leads to new species which is a type of natural selection. Therefore subset of finches that can feed on large seeds and small seeds is an example of genetic variation.
B. Upper mantle
C. Outer core
D. Inner core
Answers
The correct answer is inner core.
The highest temperature of the Earth lies in the inner core which resembles the temperature of the sun.
The temperature in the solid inner core can reach upto 9,000 degrees Fahrenheit.
The inner core is made of iron and nickel.
The movement of inner core and outer core creates magnetic field.
I hope this helps