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ira [324]
3 years ago
9

Why do areas north of the Arctic Circle in the Northeren Hemisphere experience a polar day lasting for several months during the

summer
Biology
1 answer:
inysia [295]3 years ago
7 0

Answer:

Explanation:The region does not experience spin during polar day.

b- Earth is at its closest point to the Sun during polar day.

c-The region is tilted toward the Sun during polar day.

d- Earth’s orbit passes below the Sun during polar day.

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9. Flower A blooms in June while flower B, a close relative of A, blooms in August. A researcher is raising a population of flow
Bad White [126]

Answer:

In the given case, the flowers A and B are temporally reproductively isolated from each other.  

Explanation:

Reproductive isolation takes place when populations cannot mate efficiently with each other. As a consequence, slight genetic differences originate within the populations. With time, the genetic differences gathered in the isolated populations results in the formation of various kinds of different species. In the given case, even though both the flowers A and B are the similar species, the two different flowers bloom at distinct times, resulting in a time-imposed or temporal barrier to reproduction.

5 0
4 years ago
What are the building blocks of all organisms?
butalik [34]

Answer:

cells

Explanation:

all living things are made up of cells

4 0
3 years ago
A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the rate of 3 mcg/kg/minute. the solution strength av
lions [1.4K]

First, convert pounds to kg,

<span> 220 lb : X = 2.2 lb : 1 kg = 100 kg.</span>

<span> Next, calculate the dosage per minute, </span>

3 mcg/kg/min x 100 kg = 300 mcg/min.

Now, Convert mcg/min to mcg/hour,

<span> 300 mcg/min x 60 min = 18,000 mcg/hour.</span>

Convert mcg/hr to mg/hour, 18,000 mcg/hr = 18.0 mg/hour.

Calculate the rate,

400 mg : 250 ml = 18 mg : X ml 400X = 4500 X = 11.25 = 11.3 ml.

<span>So, 18 mg/11.3 ml should be infused at <span>11.3 ml/hour</span></span>

5 0
3 years ago
What is a secondary function of the lymphatic system?
katrin2010 [14]

Answer: Fighting infection

Explanation:

Lymphatic system is a type of circulatory system in all vertebrates. It is a network of tissues ,blood vessels, and organs. The primary function of the lymphatic system is to control the fluid balance by collecting the fluid present in excess from the tissues and depositing them in the stream of blood. The secondary function of the lymph system is the production of lymphocytes (white blood cells) which fights against the disease causing pathogens. Hence, fights against infection.

6 0
4 years ago
Read 2 more answers
What are the disadvantages of using artificial blood?
kolezko [41]
Artificial blood doesn't work that good with real blood and it can have side effects. It also doesn't carry as much oxygen as normal blood does
4 0
3 years ago
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