1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Reil [10]
3 years ago
15

If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that

Biology
1 answer:
Dmitry_Shevchenko [17]3 years ago
8 0
If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that seems to come from behind the surface (B). In theory, the sound waves hit the smooth surface and bounce off the surface.  The sound also repeats itself. This is known as an echo. There needs to be a time gap between the sound and the echo otherwise the listener will not hear the echo. It will still be present but form part of the original sound.
You might be interested in
Where within the cell does the process of respiration take place?
Wewaii [24]
The answer is  <span>c. both inside and outside of the mitochondria</span>
5 0
3 years ago
CAN SOMEONE PLEASEEEE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST !!!
JulsSmile [24]

Answer:

When the rule of 70 applies to population, dividing 70 by the percentage of population growth should equal the time (in years) that the population needs to be double (option A)

Explanation:

The rule of 70 is useful to calculate the time in which a variable of any type can be duplicated. The calculation is done by dividing the number 70 by the percentage of growth of the variable.

<u>If the rule of 70 is applied to the population, it is possible to calculate, based on its growth rate, the time that population would need to double</u>.

If, for example, the growth rate of a population is 3 percent:

70 / 3 = 23,33

This indicates that a population, with a growth rate of 3% would need about 23,33 years to double.

6 0
2 years ago
2- Explain how land that gets broken up can<br> contribute to loss of species diversity
Minchanka [31]

Explanation:

Broken up land land contributes to a loss of species diversity through geographoc isolation. Geographic isolation is the physical barrier dividing the communities. It usually stops the gene flow between species in a process called allopatric speciation, contributing to reproductive isolation.

Further Explanation:

Spontaneous modifications in the genome can occur during the cycle of cell division, called mutations. These errors occur as copies of the DNA are produced within the cell; mutations may range from small modifications called single nucleotide polymorphisms to large-scale deletions and multi-gene additions.

Such mutations create variations that within a group become dominant, resulting in the creation of different, genetically distinct organisms called species.

Learn more about mutations at brainly.com/question/4602376

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly  

7 0
3 years ago
Three generations of a family afflicted with hemophilia are illustrated in the pedigree chart family members used the pedigree c
nasty-shy [4]
For the given situation above, I'm afraid I cannot answer your question since a pedigree chart isn't provided along with the question. You can resubmit your question together with the chart and we'll analyze it. Thank you for posting though. Here is what pedigree analysis is about.

Scientists have devised an approach, called pedigree analysis<span>, to study the inheritance of genes in humans. Pedigree analysis is also useful when studying any population when progeny data from several generations is limited. Pedigree analysis is also useful when studying species with a long generation time.</span>
4 0
2 years ago
Read 2 more answers
Give the function of all of the following parts of a typical flower. a. Petals
maxonik [38]

A.Petals. Usually, petals are the most prominent part of a flower structure, owing to their vivid color (in most flower examples) and sometimes scent. Their main function is to attract pollinators and also protect the inner reproductive structures of a flower. In some flowers, petals are absent or reduced.

B.Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.

C.Pistil interaction precedes fertilization in the flower. Important changes occur in the pistil, which play a role supporting, but also controlling pollen-tube growth

D. The ovule is the organ that forms the seeds of flowering plants. It is borne in the ovary of the flower and consists of nucellus protected by integuments, precursors of embryo/endosperm, and seed coat, respectively.

4 0
2 years ago
Other questions:
  • What kind of Change makes iron to rust
    12·1 answer
  • Define the mechanical differences of elastin and collagen then explain the influence of these differences on tensile strength of
    7·1 answer
  • When does the cell have to use active transport?
    12·1 answer
  • Please help me with all of question number 7
    8·1 answer
  • _______ is located in the anterior neck produces key hormones for metabolism
    14·1 answer
  • In figure 32-3 a muscle that moves food through your digestive system is shown in
    5·2 answers
  • Which of the following statements is true?
    8·1 answer
  • Use the first letter of each term to match it to the correct statement
    12·1 answer
  • What is a chromosome made of
    7·2 answers
  • Which statement about vacuoles is true?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!