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Vaselesa [24]
3 years ago
8

Water flows over gills in the opposite direction of blood flow in a process known as:

Biology
1 answer:
ExtremeBDS [4]3 years ago
8 0
<span>Countercurrent oxygen exchange I think 
</span>
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How can histograms help you describe a population? Use the word bank above to help you explain your answer.
krek1111 [17]

Answer: It shows the distribution of the population with respect to a characteristic, quantitative and continuous, such as the weight or height of a population. It is used to determine the degree of homogeneity of the values studied, or to see the degree of variability, and therefore, the dispersion of all the values taken by the parts.

Explanation:

A histogram is a graphical representation of a variable using bars. In such a bar, <u>its area is proportional to the frequency of the values represented</u>. Thus, it shows the distribution of the population, or of the sample, with respect to a characteristic, quantitative and continuous, such as the weight or height of a population. It is used to determine the degree of homogeneity of the values studied, or to see the degree of variability, and therefore, the dispersion of all the values taken by the parts.

In order to construct a histogram first we need to have a frequency table with all the information. On the abscissa axis (horizontal axis) the intervals are placed from smallest to largest.  On the ordinate axis (vertical axis), the absolute frequencies of each of the intervals are represented.  Then, the rectangular bars of equal width are drawn, and the height represents the absolute frequency. All bars touch the bars next to each other, unless an interval has zero frequency (the height of the bar will also be zero).

<u>Thus, histograms are used to describe populations since they represent a variable and in what proportion of the population it is found.</u>

7 0
2 years ago
Help ASAP PLEASE PLEASE PLEASE PLEASE
disa [49]

Answer:

Explanation:

Ok so it will be the first one but it migt be the second on for the simple fact that they both use CO2 and O2

I might be wrong because i am working on that to in my Bio class

3 0
3 years ago
How are mammalian sperm cells produced and incubated at a lower temperature than boday temperature ?
Morgarella [4.7K]

Answer:by being produced in the testes outside the body

Explanation: spermatogenesis is the production of male gamates,the sperm.this process occurs in the seminiferous tubules in the testes.epithelial cells produces the primary spermatocyte which divides to give a secondary spermatocyte.

The secondary spermatocyte divides to form spermatids,which differentiates to form the spermatozoons.

Testis is housed in the scrotal sac.

Sperm production is sensitive to temperature. Too high temperature can cause formation of abnormal cells . As a result the scrotal sac is located outside the body

4 0
3 years ago
Ben and Sam were conducting experiments on physical and chemical changes in science class. First they added some salt to water a
8090 [49]

Answer:

Sam is correct. It is a chemical change and the contents should be in D. for compound.

Explanation:

This answer is correct because I just took the USA test prep

Good Luck!

6 0
3 years ago
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PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
Semenov [28]

Answer:

The answer is C

Explanation:

( Sorry not really good at explaining)

3 0
2 years ago
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