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3 years ago

A student observed the image and claimed that the frog takes its food by sucking. Is the claim made by the student correct

Biology

1 answer:

Iteru [2.4K]3 years ago

8 0

Answer:

No; the frog is eating food as a whole, so its mode of feeding is swallowing

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Why does a population that experiences exponential growth have a high chance of having a population crash?

scoundrel [369]

Answer:

He know about god listen the to end on April 2

Explanation:

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3 years ago

Read 2 more answers

The exodus of medical professionals from africa to europe is an example of brain drain as it has the potential to __________.

Marat540 [252]

Out of the following given choices;

A) spur economic development in Africa

B) impede economic development in Africa

C) impede economic development in Europe

D) spur economic growth for those medical professionals

The answer is B. Brain drain means a country is losing its professionals to the external market rather than working in the local market due to unfavorable local conditions. The country loses because it has few medical professionals to treat its people hence it carries a higher burden of diseased people. Additionally, to cater to this gap, it has to import these medical services which is more expensive than keeping local talent.

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3 years ago

If 32 packed volume units of cells are separated from 46 volume units of plasma from a blood sample, the haematocrit is _______

nordsb [41]

Answer:

If 32 packed volume units of cells are separated from 46 volume units of plasma from a blood sample, the hematocrit is 41,02% percent. The hematocrit value is within the normal range.

Explanation:

Hello!

Hematocrit (or packed cell volume -PCV-)is defined as the percentage of red blood cells (vol%) in a blood sample. One common method of determining it is by centrifuging a heparinized blood sample in a capillary tube at 10 000 RPM for five minutes. This separates the blood sample in two layers, formed elements (RBC and WBC) and Plasma.

The length of the layers is directly measured from the tube and represents the volume of packed cells and plasma. Since the number of white cells is negligible compared to the number of red cells, the formed elements are considered to represent the red blood cells.

The hematocrit can be calculated as the volume of packed cells divided by the total volume of the blood sample.

$\frac{PCV}{TOTAL(pcv+plasma} * 100$

In the question:

$\frac{32}{32+46} * 100$ = $\frac{32}{78} * 100$ = 41,02%

In humans the normal hematocrit range is 40,7% to 50,3% for men and 36,1% to 44,3%. Taking these reference values into consideration, this sample is within the normal range.

I hope you have a SUPER day!

4 0

3 years ago

Any thing or organism that regulates the size of a population of another organism is known as____________. A-a limiting measure

valentinak56 [21]

Answer:

Any thing or organism that regulates the size of a population of another organism is known as a limiting factor

Explanation:

Organism that regulates the size of a population of another organism is known as a limiting factor which helps to curtail such population. A limiting factor helps in leveraging population and there are factors used to regulate such population, the factors include; predator, parasites, among others

3 0

3 years ago

Solve for v negative 38= v/2

Nadusha1986 [10]

$- 38 = \frac{v}{2}$

$\text{Multiply by 2 on both sides, }$

$2 \times ( - 38) = \frac{v}{ \cancel{2}} \times \cancel{2} \\ \\ \\ \\ = > - 76 = v \times 1 \\ \\ \\ = > - 76 = v$

So, value of v is - 76

4 0

3 years ago