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Marianna [84]
3 years ago
12

Why do mountaineers become breathless as they reach high altitudes?

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

Answer:

C.  Oxygen concentration decreases as altitude increases

Explanation:

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

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Number the steps of the binary fission process in correct order
kari74 [83]

Step 1:

The bacterium cell must copy its DNA so the new cells will have DNA. DNA or, deoxyribonucleic acid, has all of the information the bacterium will need to survive, so it is important it gets copied. The DNA is tightly wound so it is in a neat package called a chromosome.

Steps 2 and 3:

The bacterium now grows larger. This allows for some separation between the two DNA copies that are inside the cell. A division develops in the middle of the bacterium. This division eventually completely divides the bacterium in half. This is called cytokinesis.

Step 4:

Each cell is now called a daughter cell and they separate.

The steps of binary fission

binary fission

Binary fission results in two identical daughter cells. This is a type of asexual reproduction, or creating genetically identical offspring. If humans were able to reproduce using binary fission, it would look something like this: your mother or father would grow larger, and inside all of his or her DNA would be copied. Eventually your parent would split in half creating an identical clone.

5 0
3 years ago
Other factors being equal, which sensory stimulus is least likely to lead to sensory adaptation?
valentina_108 [34]
The correct answer is: the wail of a loud car alarm. 
Sensory adaptation is a term that refers to the changes that stimuli can trigger on the sensory receptors. The process involves changes in the receptors' sensitivity and it is believed that all of the senses exhibit this adaptation. In particular, the sense of touch can quickly adapt to hot and cold stimulation, but not when the stimulus is extremely intense (such as too hot or too cold). Also, our olfactory sense presents the characteristic of odour fatigue. A prolonged exposure to a specific smell leads to a temporary inability to sense this smell and this is a type of sensory adaptation. Finally,
our hearing undergoes a sensory adaptation as well, but not when it comes to sudden, unexpected and instantaneous loud noises. That is why the wail of a loud car alarm will be the least likely to cause sensory adaptation.
3 0
3 years ago
Describe how two abiotic factors can move into the trees in a rain forest ecosystem
makkiz [27]

Answer:

The abiotic factors are non-living factors that interfere with the forest ecosystem. Two abiotic factors are the amount of rain and sunlight. The amount of these two abiotics determines how much a tree will grow or how thick and diverse the population of trees in a forest will be.

Explanation:

8 0
3 years ago
Please don't answer if you arent 100%
VLD [36.1K]

Answer:

Pelagic

Explanation:

The deepest regions of the sea are Hado pelagic

7 0
2 years ago
Read 2 more answers
Photosynthesis is an example of...
amid [387]

Answer:

Endothermic reaction

Explanation:

Photosynthesis is an endothermic reaction because sunlight is being absorbed during the reaction and the definition suggests that in a reaction if heat is being absorbed it is termed as an endothermic reaction.

5 0
2 years ago
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