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Dmitrij [34]
3 years ago
6

At various times, Cynthia, a 20 year-old college student, has been considered by her family and/or friends to be moody, high-str

ung, explosive, or hyperactive. Knowing the criteria for mood disorders you would diagnose Cynthia with:
Biology
1 answer:
Serga [27]3 years ago
3 0
<h2>Cyclothymia</h2>

Explanation:

Cynthia should be diagnosed with Cyclothymia.

According to the question, Cynthia is moody and shows short periods of mood swings. Her mood changes spontaneously and then she gets normal. This might be confused as bipolar disorder but it is not so because bipolar disorders is characterized by  long episodes of particular mood states. Secondly, Cynthia is able to lead a normal life. So, she is suffering from Cyclothymia.

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Inside each of your lungs there are tubes called bronchi. these branch into even smaller tubes much like the branches of a tree.
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I think it is bronchioles.
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A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern? A. Phloem
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The part of the stem that gives rise to this pattern is : B. xylem

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What are the function of the meristem?​
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The main function of the meristem is to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.

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2 years ago
What is the meaning of stoma?
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6 0
3 years ago
Why aren't there many large carnivores?
Anika [276]

Answer:

Technically, the largest ever marine predator known thus far - the blue whale - is, for now, alive and well, but I know what you mean. You’re not talking about filter-feeders, or fish-eaters, you mean macropredators.

The last truly enormous macropredator in our oceans was probably Carcharocles megalodon, which went extinct about 3.6 million years ago. Other recent examples include the terrifying sperm whale Livyatan melvillei (which disappeared 8.9 mya) and other megatoothed sharks like C. chubutensis.

So, why did the giants go away? The answer, in truth, is likely multi-faceted. Here are some major promising hypotheses, or at least contributing factors:

Whales have declined. Giant sea carnivores like C. megalodon and Livyatan relied on marine mammals - specifically baleen whales. During the Pliocene, the Americas connected and the Central American Seaway was closed. This seems to have triggered a significant decline in the diversity of tropical whales, and would thus limit food availability for huge, energy-hungry predators.

Things got too cold. The extinction of megalodon and other giant ocean predators roughly coincides with the trend of decreasing temperatures the Pliocene brought. Giant sharks in particular, not being fully warm-blooded, would suffer from this, and it would also mean a decline in food supply. You can even see a sudden cold snap just about when Carcharocles went extinct, 3.6 mya.

Smaller predators outcompeted them. The niche of Carcharocles and the macroraptorial sperm whales is arguably still filled today - by the killer whale. Many orca pods specialize in hunting whales or other marine mammals. However, killer whales and their ancestors were perhaps more opportunistic, fast, intelligent and indeed adaptable than the massive, solitary hunters.

Ironically, the largest ever marine predator owes its existence to the demise of the largest ever marine macropredators. Since the extinction of macroraptorial sperm whales and Carcharocles megalodon, baleen whales have been gradually increasing in size, for they no longer need to be as fast and agile. Because of this, we have the privilege of sharing our world with the largest animal known to have ever lived - the blue whale.

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3 years ago
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