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shusha [124]
3 years ago
10

It is an elongated white cord on the inside of the spine. It measures approximately 45 cm in length and its thickness does not e

xceed the width of the little finger.________
Biology
1 answer:
o-na [289]3 years ago
3 0
That should be the spinal cord which rests inside the spinal vertebra.
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Holly is a healthy woman who is 22 years of age. using this information, calculate her target heart rate zone for moderate-inten
guajiro [1.7K]

Answer:

99 to 138.6 bpm

Explanation:

The heart rate of an individual is a measure of how many times the heart beats in a given time, usually measured in beats per minute (bpm).

Resting heart rate is the number of beats per minute when an individual at rest. Generally, it can be understood that the lower the resting heart rate, the more physically fit an individual is.

The maximum heart rate for an individual is 220 minus their age. The target heart rate for moderate physical activity is 50-70% of the maximum heart rate and for vigorous physical activity it is 70-85% of the maximum heart rate.

Based on Holly's age, her maximum heart rate is 220 - 22 = 198 bpm

Her heart rate zone for moderate physical activity is 50-70% of 198 bpm: 99 to 138.6 bpm

Her heart rate zone for vigorous physical activity is 70-85% of 198 bpm: 138.6 to 168.3 bpm

7 0
3 years ago
Identify which type of natural selection is described in each case below.
ICE Princess25 [194]

Answer:

Results in the evolution of the species: Directional selection

Results in new species: Disruptive selection

Favors traits at the two extremes: Disruptive selection

No increase in diversity: Directional selection

One extreme trait is favored: Directional selection

Diversity decreases: Stabilizing selection

Diversity increases: Disruptive selection

Explanation:

Directional selection which is also known as positive selection is known to be a mode of natural selection. In this type of selection, an extreme phenotype is favored over other phenotypes. This makes the allele frequency to move in the direction of that phenotype and this takes place over time.

Disruptive selection (known to be diversifying selection) talks about the certain changes in the population genetics whereby extreme values of a particular trait are favored over intermediate values. This results in new species.

While Stabilizing selection is a natural selection whereby there is a stabilization of the population mean on the particular value of a non-extreme trait. Here the diversity is decreases.

3 0
3 years ago
24 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Volgvan

I just finished the quiz it would be A my friend

4 0
3 years ago
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3. What would happen to marine ecosystems if coral became extinct?
Kryger [21]
Certain fish that live or depend on coral will most likely be extinct
6 0
3 years ago
Is a chicken egg biotic (living) or abiotic (non-living)? *
adelina 88 [10]

Answer:

its biotic

Explanation:

7 0
3 years ago
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