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
Marianna [84]
2 years ago
12

Why do mountaineers become breathless as they reach high altitudes?

Biology
1 answer:
garik1379 [7]2 years ago
3 0

Answer:

C.  Oxygen concentration decreases as altitude increases

Explanation:

Higher altitudes have lower levels of oxygen and decreased air pressure.

You might be interested in
If a male genotype is Tt and the female genotype is TT, then what are the phenotypic ratios for tall and short corn?
Helen [10]

The correct answers are: All Tall, 1:1

4 0
2 years ago
Which two codons in the mRNA represent the amino acid phenylalanine
Trava [24]

Answer:

UUU and UUC

Explanation:

Information that encodes certain functional products called PROTEIN are present in the DNA molecule. However, the information needs to be expressed via the processes of transcription and translation. Transcription is the synthesis of a mRNA using a DNA template.

The mRNA then undergoes translation, where it is read in a group of three nucleotides called CODON. Each CODON specifies a particular amino acid. Due to the degenerate nature of the genetic code, more than one codon can specify one amino acid.

Hence, in the case of phenylalanine amino acid, codons UUU and UUC both specify it. This means that whenever UUU and UUC are read during translation, a phenylalanine is added to the peptide chain.

8 0
3 years ago
At which one of the following days in the 28-day cycle is a woman MOST likely to get pregnant?
motikmotik

Answer:

The answer is day 14 - / + 3 days

Explanation:

In a 28-day menstrual cycle the most likely days for a woman to become pregnant is from day 14 - / + 3 days, that is, days 11, 12, 13, 14, 15 and 16. She should be educated, If she is in search of pregnancy, take the vaginal temperature and realize how the viscosity of the abundant flow begins to present.

4 0
2 years ago
Describe how producers, consumers, and decomposers are linked in a food chain.
Anuta_ua [19.1K]
Producers,consumers,and decomposers are linked because they all have to work together to stay alive the produces will make the energy inside itself then the consumers will eat it then have all the energy the plant had then the consumer will die and the decomposer will beak it down and eat what remains of the animal   

i hoped this helped :)
6 0
3 years ago
The Susquehanna River, which runs through the states of New York, Pennsylvania, an Maryland , received the title- America's most
Lina20 [59]

This  produces several negative effects on the biodiversity of the river ecosystem.

<u>Explanation:</u>

The Susquehanna river is polluted by the excess release of nutrients like phosphorous and nitrogen from agricultural land and sewage treatment plants. This can adversely affect the health of the river. The excess of nutrients will accelerate the growth of algae in the river.

The dead algae that settle at the bottom of the river decay by consuming the oxygen present in the river. This will reduce the amount of dissolved oxygen in the river and affect aquatic life.

Thick algal growth partially prevents the penetration of sunlight into the water and this affects the growth of submerged plants which are food to the fish.

5 0
2 years ago
Other questions:
  • If the ozone layer disappeared, life on Earth would be exposed to ____ concentrations of ultraviolet radiation
    10·1 answer
  • A fat is called ____ of all carbons of the fatty acid chain are single bonded
    10·1 answer
  • 1) Which of the following brain regions is indicated by the arrow?
    14·1 answer
  • What is the chemical produced by the body to control
    9·1 answer
  • The pH of water is<br> because it contains an equal amount of H' and OH ions.<br> O5<br> ооо
    10·1 answer
  • What measures the amount of space that substance or an object takes up
    14·1 answer
  • Need help on this please!!!
    14·1 answer
  • Someone please help me on this thanks
    15·1 answer
  • In beans, the black color of the seeds (A) dominates over the white (a). When two bean plants were crossed with black seeds, pla
    10·1 answer
  • The direction that an ocean current travels can be altered by the movement of the Earth's rotation on its axis. This is known as
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!