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Finger [1]
2 years ago
7

What is natural selection ?

Biology
1 answer:
sergejj [24]2 years ago
7 0
Natural selection is a theory developed by Charles Darwin. It is believed that animal species evolve by nature "selecting" the ones that are fit to live in specific environments. For example, if an animal lacks a trait that is needed for a certain environment, it is likely to die. The animals that have the needed traits are more likely to live and procreate, which will pass on the trait to its offspring. Hope this helped!
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If you want to change the pitch of a sound, you have to change the ___ Question 7 options: volume speed amplitude frequency
charle [14.2K]

The correct answer is frequency.

The pitch can be defined as the quality of sound produced by the rate of vibration producing it.

It is directly related to the the frequency of the sound wave. If the frequency is increased then its pitch will also increase and vice versa.

As for normal people it is a bit difficult to differentiate between the two but the musician are trained so they can differentiate the difference between the two even if the difference is 2 Hz




8 0
2 years ago
The ________ is a region of dense bone that surrounds and protects the membranous labyrinth. vestibule membranous callus bony ca
Law Incorporation [45]

The bony labyrinth is a region of dense bone that surrounds and protects the membranous labyrinth.

Labyrinth is the name given to the inner ear. It is made up of a network of interconnecting sacs and canals. The inner ear is composed of two parts: bony labyrinth and membranous labyrinth. A vestibule, three semicircular canals, and a spirally wound cochlea make up the bony labyrinth. It is perilymph-filled.

The membranous labyrinth is encircled by the bony labyrinth. It includes the hearing and balance sensory receptors. The cochlear duct, saccule, and utricle and three semicircular ducts that make up the endolymph-filled membranous labyrinth. The cristae, an organ of corti, and the ampullaris maculae are examples of sensory receptors.

To learn more about inner ear, membranous labyrinth and bony labyrinth here,

brainly.com/question/28169216

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4 0
1 year ago
What phase is Homologous chromosome paired.
kumpel [21]

In metaphase I of meiosis I, the pairs of homologous chromosomes, also known as bivalents or tetrads, line up in a random order along the metaphase plate. The random orientation is another way for cells to introduce genetic variation.

4 0
3 years ago
What organs develop in the embryo during the 1st month of pregnancy?
balu736 [363]

Answer:

thus buds that eventually grow into arms and legs are formed in 1st month of pregnancy

7 0
2 years ago
What are two important parts of the human digestive system
slamgirl [31]

Answer:

Regions of the digestive system can be divided into two main parts: the alimentary tract and accessory organs.

Explanation:

8 0
1 year ago
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