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Effectus [21]
3 years ago
5

Why do island chains provide ideal conditions for adaptive radiation to occur?

Biology
1 answer:
Hoochie [10]3 years ago
8 0

Answer:

The comparatively fast evolution of various species from a single common ancestor is known as adaptive radiation. It usually takes place when an organism enters a novel region and distinct traits influence its survival. The island chain offers suitable conditions for adaptive radiation to take place as when an organism of a certain species comes to an island together and get disperse all through the chain, and each of these organisms getting settle into distinct niches and exploiting various food resources in order to minimize the competition, thus, resulting into adaptive radiation.

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A patient has taken levodopa [Dopar] for Parkinson's disease for 2 weeks but reports no improvement in the symptoms. Which respo
Elan Coil [88]

Answer:

Option-D

Explanation:

Parkinson's diseases are a neural disorder which affects the movement of the human body. The disease is caused by the low production or no production of dopamine by the neurons which thus interfere with the impulse transfer and thus movement.

In the given question, the patient with Parkinson's disease is provided with levodopa but no improvement is observed therefore the prescriber must change the drug regimen, for example, the levodopa should be given in combination with carbidopa. These medications enter the blood-brain barrier and get converted to the dopamine.

Thus, Option-D is the correct answer.

8 0
3 years ago
If a meal supplies 110 g of carbohydrates, 25 g of protein, 20 g of fat, and the equivalent of 5 g of alcohol, what % of the kca
mars1129 [50]

Answer:

0.058 % kcalories comes from carbohydrate.

Explanation:

1 g of carbohydrtes gives 4 calories, 1 g of protein gives 4 kcalories, 1 gm of fat gives 9 calories and 1 g of alcohol gives 7 calories of energy.

Thus in a meal  that contains 110 g carbohydrates gives 110 x 4 = 440 calories,  25 g protein gives 25 x 4 = 100 calories, 20 g fat gives 20 x 9 = 180 calories and 5 g alcohol gives 5 x 7 =  35 calories.

Total calories in a meal  440+100+180+35 = 755.

Therefore % of carbogydrate will be 440x 100 divided by 755 = 58.27 %

In kcalories % would be 58.27/1000 = 0.5827 %  

5 0
3 years ago
A client is experiencing chest pain and self-administers nitroglycerine sublingually. when should the client expect to notice re
o-na [289]

Nitroglycerin relaxes the arteries and veins. It pools the blood in the extremities dropping blood pressure. Chest pain relief can be expected in 1-3 minutes. Because it is administered sublingually, it is absorbed directly in the bloodstream. If the chest pain did not improve in 5 minutes, it should be repeated. It can be repeated the third time( after 5 minutes from second dose). If the pain doesn't subside after 3 doses, emergency care is needed.

4 0
3 years ago
2. (2 pts) According to the cladogram, which organisms develop in an “amniotic egg”?
IrinaK [193]

Answer:

The answer is primates, rodents/rabbits, crocodiles and birds.

Explanation:

Cladogram

A cladogram is a diagrammatic epresentation of the evolutionary relationships between organisms that emerged from the same ancestor. Basically, it shows how closely one organism is related to another.

A cladogram differs with a phylogenetic tree in the sense that a cladogram only shows evolutionary relationships between one ancestor and all its descendants. On the other hand, a phylogenetic tree explains relationships between many clades (group of related species)

A cladogram also identifies various evolutionary points or milestones of the development of certain characteristics.

According to this cladogram, the amniotic egg evolved before the emergence of the common ancestor of primates, rodents, crocodiles and birds.

7 0
3 years ago
A plant species lives in an area with limited sunlight. Which physiological adaptation would be most useful to the plant?
Inessa05 [86]
the answer is B. large leaves!!
8 0
3 years ago
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