Question
Peer Response
Respond to both of my peers questions as a college student would.
Darius Thomas
Yesterday
Good morning class,
I want to talk about my favorite season of the year fall. This is the time of the year when all of the leave start to turn vibrant reds, orange, and yellow. Why is it that this magnificent happen? Well as we know the leaves of the tree make chlorophyl. This product is what keeps the leaves a lively green. Once the sun starts to go down earlier in the day causing the trees to have less sunlight throughout the day. It triggers the leaves to get ready for fall. In doing so the leaves will start to make less chlorophyll. Causing the leave to start developing different pigments. These pigments are a result of for different chemicals that are present in the leaves. Xanthophylls (yellows), Carotenoids (oranges), Anthocyanins (reds), and Chlorophyll (greens). trees are very sensitive to their surrounding environment. Meaning they change depending on the sun weather and temperature. I have always found this to be very interesting because of the beautiful warm colors that the tress display in the months where the weather becomes cooler.
Reference:
Why do leaves change color?. NOAA SciJinks - All About Weather. (n.d.). https://scijinks.gov/leaves- color/#:~:text=The%20Short%20Answer%3A,oranges%2C%20and%20yellows%20become%20visible.
← Reply
Heather Blackburn
Yesterday
I have chosen Electromagnetic waves and human health as my topic this week. Electric and Magnetic Fields (EMF's) are all around us. There are natural ones that have been here forever but there are man-made EMF's that we all use. Some scientists believe that they can be damaging to humans but some say they are not.The sun has always emitted EMF's in ultraviolet radiation. There are many human-manufactured items that emit them as well. Some of these are microwave ovens, cellular phones, computers, MRI machines. These are all considered non-ionizing radiation-producing which are mild and aren't harmful to humans. The ionizing radiation can be harmful to human cells. These include X-rays, CT scans, and even our beloved sun's production of UV rays. There are disagreements as to the harmfulness of these rays. Ionizing radiation can cause the removal of an electron from an atom which could possibly cause cancer or genetic mutations. Scientists believe that there hasn't been enough research done to prove or disprove these statements.I am interested in this subject because it could cause harm to all of us. I work in a clinic as well that does X-rays. They do state that the farther away you stay from the rays the better off you will be.EMF Exposure: Danger Levels, Symptoms, Protection, and More (healthline.com) E
Reply
Expert Solution
Darius Thomas
;The paper is well crafted, and the points
addressed regarding the correlation between chlorophyll and the falling of
leaves are insightful. I agree with the claims raised that shorter exposure to
sunlight and varying temperature are the main cause of how trees display
themselves. As the season changes, less sunlight reaches the tree tops due to
lower temperatures, causing the chlorophyll in its leaves to degrade. The
absence of chlorophyll allows the yellow and orange pigments in the leaves to
become more noticeable. After hearing the student's account, I did some further
research on the issue of leaf pigmentation. Various natural compounds found
inside plants result in leaves of varying colours. Chlorophyll is the component
responsible for green foliage, and it just so occurs that green leaves perform
photosynthesis the most effectively. The same logic applies to the widespread
prevalence of green in plant life. Trees pack their leaves with chlorophyll on
purpose so that they may produce as much energy as possible. Chlorophyll
synthesis ceases, and chlorophyll amounts in leaves decrease when temperatures
drop later in the season. This allows for the release of additional chemical
compounds found in the leaves. Chlorophyll depletion results in a proliferation
of a yellow pigment.
This question has been solved!
- Verified by Admin
- Written by a Human Expert
