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
raketka [301]
3 years ago
15

What is an astronomical unit or AU?

Biology
1 answer:
hichkok12 [17]3 years ago
7 0

Answer:

B

Explanation:

The correct option should be B.

The Astronomical Unit, AU, is a measurement unit for length in general astronomy and represents the mean or the average distance of the sun from the earth.

Mathematically, in astronomy,

1 astronomical unit = 150,000,000 km

But then, 1 km = 0.621371 mile

Hence,

150,000,000 km = 150,000,000 x 0.621371 miles

            ≈93,000,000 miles

Therefore, 1 astronomical unit can also said to be approximately equal to 93,000,000 miles.

<u>The correct option is B</u>

You might be interested in
Fresh water found in soil and rock layers below Earth’s surface is called deep water. Please select the best answer from the cho
Vinvika [58]

The best answer is; False

Fresh water found in soil and rock layers below Earth’s surface is not called deep water. It is known as ground water. Groundwater is the water that exists below the earth's surface in the cracks and spaces in soil, rock and sand. Groundwater flows to the earth surface naturally and discharges to water bodies such as rivers, lakes and wetlands. Groundwater is usually extracted for municipal, industrial and agricultural uses by extraction wells.

3 0
4 years ago
How would a mistake in transcribing the DNA message affect your ability to catch the killer?
mel-nik [20]

Answer: When the DNA collected on the crime scene is being analysed in the forensic lab, the results will be inconclusive, because error in DNA transcription, particularly in mRNA encoding leads to inheritable phenotype change by reprogramming the transcriptional network, without changing the DNA. Transcription errors are brief with no long-term consequences. Due to mRNA being short-lived and the erroneous proteins are degraded. A decrease in transcription accuracy triggers cellular identity change.

Explanation: This is called epimutation, a heritable modification that results in the change of gene expression, but not the DNA sequence. Epimutation is not associated with DNA mutation, but is associated with the loss or gain of DNA methylation or other heritable changes of the chromatin.

6 0
3 years ago
What is true about the efficiency of energy transfer in an ecosystem?
Schach [20]
<span> Very inefficient. Almost 90% of all energy is lost between trophic levels. That is why larger animals need to eat more, because less energy is being consumed. 
</span>
8 0
3 years ago
Living organisms contain many complicated molecules. Which of these is a reason that carbon is important in these molecules?
Flauer [41]
The answer is D) carbon forms both single and double bonds.
4 0
3 years ago
Read 2 more answers
What submersible craft recovered the hydrogen bomb that fell into the mediterranean sea during the palomares hydrogen bomb incid
Leya [2.2K]
A. Alvin is the correct answer.
7 0
4 years ago
Read 2 more answers
Other questions:
  • Global warming is primarily caused by an increase in the atmosphere of which gas a. CO2 c. ozone b. O2 d. CFCs
    14·1 answer
  • Red blood cells that are bathed in blood neither shrink nor swell and burst. If the concentration of blood is 0.5 M, what could
    14·1 answer
  • If a person were born without eccrine glands, what skin function would he or she have a hard time completing?
    8·1 answer
  • Horses are much larger today than their two-foot tall ancestor, mesohippus. Geologists believe the change in size was the result
    12·2 answers
  • Soil horizons develop as a result of?
    11·1 answer
  • Which statement describes one thing that must happen during the founder effect?
    9·1 answer
  • HELPPP PLEASE!!! during the summer of 2015, the New Horizon space probe provided the first fly by images of the dwarf planet Plu
    13·1 answer
  • What si the answer ? Somebody pls smart peopdn
    5·1 answer
  • Which of the following organisms would usually compete with mice for seeds to eat in an ecosystem?
    15·1 answer
  • What do economists call the inverse relationship between price and quantity demanded?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!