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The color change in poinsettias is influenced by the number of hours of daylight due to their photoperiodic nature. Poinsettias require long nights and short days (typically around 12-14 hours of darkness) to initiate the blooming process and develop their vibrant red bracts. As the days shorten in the fall, the extended periods of darkness signal the plant to produce pigments like anthocyanins, leading to the characteristic color change. Thus, manipulating light exposure can effectively control their flowering and color display.
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Where on the earth do the number of daylight hours change the most in the year?
The number of daylight hours change the most near the polar regions, such as the Arctic and Antarctic circles. In these areas, daylight can vary dramatically from months of continuous daylight during summer to months of darkness during winter due to the tilt of the Earth's axis.
How does the tilt of earth's axis affect the number of daylight hours and temperature?
if the axis is over 90 degrees to the norh as it is in the summer
How does the change in the carbon's number of neutron affect the atomic number?
The number of neutrons has no influence on the number of the atomic number. Only protons do, and they only change in nuclear chemistry.
Which month does Houston have the shortest number of daylight hours?
December has the shortest number of daylight hours in Houston.
How does the change in the carbons number of neutron affect its atomic number?
Changing the number of neutrons in the nucleus does not affect the atomic number, which is the number of protons in the nucleus. However, changing the number of neutrons can create different isotopes of the same element, which may affect the stability and properties of the atom.
What is daylight dependent on?
Daylight is greatly dependent on the sun. The number of daylight hours a city or country receives is dependent on its latitude.
What Caterpillar eats poinsettia?
Horned caterpillars
What is plants that flower when nights are short?
Poinsettias and chrysanthemums are short day plants. They need a certain number of hours of uninterrupted darkness to cause the plant to start flowering. Poinsettias need 18 hours of darkness to trigger this. Chrysanthemums need twelve hours of darkness.
How would adding a neutron to an atom affect its atomic number?
Atomic number = Number of protons. So addition of neutron has no affect on the atomic number.Isotopes of the same element are formed by the change in neutrons.
What part of the nucleaus can change and not change the identity of the element?
The number of protons in the nucleus affects the elemental identity of an atom, whereas the number of neutrons does not affect which element an atom belongs to.
How does earth's axis affect the number of daylight hours and the temperature of a location of earth?
Earth's axial tilt, approximately 23.5 degrees, significantly influences the number of daylight hours and temperature experienced at various locations. During summer in one hemisphere, that region is tilted toward the sun, resulting in longer daylight hours and higher temperatures. Conversely, during winter, the same hemisphere is tilted away from the sun, leading to shorter days and cooler temperatures. This axial tilt is responsible for the seasonal changes that impact climate and daylight duration across the planet.
Find Independent variable for Is the number of eggs a chicken lays affected by the hours of daylight?
The following is a hypothesis: "The number of eggs a chicken lays is affected by the hours of daylight." In this hypothesis, the independent variable is the hours of daylight.
