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Oksanka [162]
3 years ago
9

Diffusion of oxygen from an alveolus into a pulmonary capillary belongs to which aspect of respiration?

Biology
1 answer:
Eva8 [605]3 years ago
3 0
Cellular respiration
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If the voltage of this battery was increased,what would happen to the light bulb’s brightness
Degger [83]

Surprisingly, nothing.

Without changing the characteristics of the light bulb, it's not actually possible to change the voltage without changing the current as well. When the voltage is increased, the current through the bulb has to increase as well in order to make it glow brighter.

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2 years ago
Please select the word from the list that best fits the definition naturally occurring solid mixture of one or more minerals and
Hatshy [7]
<h3><u>Answer;</u></h3>

Rock

<h3><u>Explanation</u>;</h3>
  • Rock is a naturally occurring solid mixture of one or more minerals or organic matter.
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  • <em><u>Rocks are classified by how they are formed, their composition, and texture. </u></em>Rock has been an important natural resource as long as humans have existed.
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3 years ago
Can someone please answer my last question its in biology and 7th grade
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4 0
3 years ago
List and explain the 3 paths natural selection can take.
evablogger [386]

Answer:

1. Stabilizing Selection  

2. Directional Selection  

3. Disruptive Selection  

Explanation:

Stabilizing Selection  

This type of natural selection occurs when there are selective pressures working against two extremes of a trait and therefore the intermediate or “middle” trait is selected for. If we look at a distribution of traits in the population, it is noticeable that a standard distribution is followed:

Example:  For a plant, the plants that are very tall are exposed to more wind and are at risk of being blown over. The plants that are very short fail to get enough sunlight to prosper. Therefore, the plants that are a middle height between the two get both enough sunlight and protection from the wind.

Directional Selection  

This type of natural selection occurs when selective pressures are working in favour of one extreme of a trait. Therefore when looking at a distribution of traits in a population, a graph tends to lean more to one side:

Example: Giraffes with the longest necks are able to reach more leaves to each. Selective pressures will work in the advantage of the longer neck giraffes and therefore the distribution of the trait within the population will shift towards the longer neck trait.

Disruptive Selection  

This type of natural selection occurs when selective pressures are working in favour of the two extremes and against the intermediate trait. This type of selection is not as common. When looking at a trait distribution, there are two higher peaks on both ends with a minimum in the middle as such:

Example: An area that has black, white and grey bunnies contains both black and white rocks. Both the traits for white and black will be favored by natural selection since they both prove useful for camouflage. The intermediate trait of grey does not prove as useful and therefore selective pressures act against the trait.

6 0
2 years ago
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