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Zanzabum
4 years ago
8

Ultrasound may be used for medical purposes to see babies in the womb or to break up kidney stones. The uses depend on the frequ

encies used and how they are focused. How do ultrasounds compare to sounds a human can hear?
A. Ultrasound sounds are actually not sounds but are forms of radiation.
B. Ultrasounds are very high frequency sounds humans cannot hear.
C. Ultrasound waves are too large to travel into the inner ear.
D. Ultrasound waves travel as transverse waves instead of compression waves.
Biology
2 answers:
sladkih [1.3K]4 years ago
7 0
Im like 98% sure its B because ultra sounds hear the frequency's of the baby in the womb 
LuckyWell [14K]4 years ago
3 0

Answer:

B

Explanation:

It is the answer because ultrasounds have hig frequency you cannot hear which the ultrasound will help you know how the baby is breathiing and how healthy it is.

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Of the 23 pairs of chromosomes in any normal human cell, the first ____ pairs provide directions for an individual's body and br
cluponka [151]

Answer:

Of the 23 pairs of chromosomes in any normal human cell, the first 22 pairs provide directions for an individual's body and brain development. Scientists now estimate that about half of a person's personality traits and cognitive abilities can be traced to genetic influence and that psychological disorders arise from the interactions of many genes.

Explanation:

Chromosomes are small molecules that have the ability to carry all the genetic information needed to form a living being. These chromosomes are donated by an individual's parents and are used to form 23 pairs that determine all the internal and external characteristics of an organism. Among these 23 pairs, one pair will be responsible for determining the individual's gender, and the other 22 pairs will be responsible for the instructions that will make up the entire body and brain of the individual. Many scientists believe that chromosomes are responsible for even a part of a person's personality traits and that the genes they carry are directly related to the existence of psychological disorders.

7 0
3 years ago
Which is the best description of a tropical climate zone? O A. High altitude O B. Warm all year long O C. Thick sheets of ice O
VMariaS [17]

Answer: Hewo, there! your answer is Below

B. Warm all year long

Explanation:

here are normally only two seasons in tropical climates, a wet season and a dry season. The annual temperature range in tropical climates is normally very small. Sunlight is intense.

Hope this helps!

Have a great day!!

3 0
3 years ago
Which of the following is characteristic of the second stage within a demographic transition? A. The birth rate falls to meet th
NeTakaya
The answer is C) The death rate begins to fall, but the birth rates remain high for a time. No countries in the world are currently in Stage 1 or demographic transition. However, many are in stage 2, which is why many governments are concerned about overpopulation. 
6 0
3 years ago
Read 2 more answers
Ms.Tim wants to find out how sleep affects students test scores.He organized two groups of students.In Group A, He has student s
Makovka662 [10]

Answer:

Independent Variable: Hours of sleep

Dependent Variable: Test scores

Experimental Group: Group A

Control Group: Group B

Explanation:

Hours of sleep is the independant variable because it is the factor being tested by the teacher. This is the factor that can be controlled.

Test scores is the dependant variable because it is the factor being affected by the changes in the independent variable. This is the variable being measured.

Group A is the experimental group because this is the one that has been altered or changed from what is normal.

Group B is the control group because nothing is being changed in this group but simply measured as a basis for comparison.

6 0
2 years ago
Why must males inherit colorblindness from their mothers.
Oxana [17]

Answer:

below

Explanation:

B/c (red-green) color blindness is found on X-chromosome and males take X-chromosome fron their mother and Y-chromosome from their father.

6 0
2 years ago
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