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
d1i1m1o1n [39]
3 years ago
13

Why do mountaineers become breathless as they reach high altitudes

Biology
2 answers:
Alona [7]3 years ago
7 0
There aren't enough oxygen molecules in the air are higher altitudes
nexus9112 [7]3 years ago
7 0

because as you rise the pressure increases and the air gets compressed making the oxygen to decrease and go down

You might be interested in
How does the nucleus help the cell process waste?
BabaBlast [244]
The nucleus of a eukaryotic cell directs the cell’s activities and stores DNA. not only does the membrane let molecules into the cell, but it also lets wastes suck as carbon dioxide out of the cell
6 0
3 years ago
To service the energy needs of the sperm cells, the cell has______?
ivann1987 [24]
Protein or amino acids
3 0
3 years ago
Colorblindness is more common in males than in females because the allele for colorblindness is A dominant and located on the X
strojnjashka [21]
The anser is C. recessive located on the X chromosome.
7 0
3 years ago
Read 2 more answers
All glands in the body, such as salivary glands and the pancreas, are derived from which type of tissue
tiny-mole [99]

Answer:

Endoderm

Explanation:

The embryo has three germ layers. The ectoderm, mesoderm, and endoderm. The endoderm is the innermost layer. Other than the endocrine glands, the other tissues that develop from the endoderm are the gastrointestinal tract, urinary and auditory system, and the respiratory tract.

4 0
3 years ago
John and Joshua used a light microscope to observe a plant cell. They indicated the magnification as x1000. Given the eye piece
Zinaida [17]

Answer:

Objective Lens Magnification = ×100

Explanation:

In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.

In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.

Total Magnification = (eyepiece lens magnification) × (objective lens magnification)

1000 = 10 × obejcetive lens magnification

Dividing both sides by 10

Objective lens magnification = 1000 ÷ 10 = 10

∴ Objective lens magnification = ×100

7 0
3 years ago
Other questions:
  • How many chromosomes do the new cells have compared to the parent cell in mitosis?
    15·1 answer
  • Which of the following is true about differentiated cells?
    6·1 answer
  • Identify the varibles in the equation for determining the ideal mechanical advantage of a lever
    7·1 answer
  • How are plants chemical factors?
    7·1 answer
  • During electrophoresis, DNA fragments move toward the anode. What does this
    6·1 answer
  • Which of these is the most serious impact to an ecosystem after a tornado?
    8·1 answer
  • I NEEEEEEDDDDD HELP PLEASE
    9·2 answers
  • A 5kg book is placed on a 2.5m high shelf how much gpe has the book gained
    7·1 answer
  • 1. You and your family are going to the beach because it is summer. However, minutes after swimming, your skin darkens
    10·1 answer
  • In a car accident, ryan sustained significant damage to the acetabulum on the right side. arthroplasty to address this is best d
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!