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Anna11 [10]
3 years ago
10

Give one example of how natural selection can change the distribution of a trait

Biology
1 answer:
Andrej [43]3 years ago
5 0
An example is sexual dimorphism<span>. This refers to differences between the phenotypes of males and females of the same </span>species<span>. In humans, for example, males and females have different heights and body shapes.</span>
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Starting from the mouth, describe the pathway that takes through the digestive system
bonufazy [111]
Food starts to move through your GI tract when you eat. When you swallow, your tongue pushes the food into your throat. A small flap of tissue, called the epiglottis, folds over your windpipe to prevent choking and the food passes into your esophagus.

Esophagus. Once you begin swallowing, the process becomes automatic. Your brain signals the muscles of the esophagus and peristalsis begins.

Lower esophageal sphincter. When food reaches the end of your esophagus, a ringlike muscle—called the lower esophageal sphincter —relaxes and lets food pass into your stomach. This sphincter usually stays closed to keep what’s in your stomach from flowing back into your esophagus.

Stomach. After food enters your stomach, the stomach muscles mix the food and liquid with digestive juices. The stomach slowly empties its contents, called chyme, into your small intestine.

Small intestine. The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine, and push the mixture forward for further digestion. The walls of the small intestine absorb water and the digested nutrients into your bloodstream. As peristalsis continues, the waste products of the digestive process move into the large intestine.

Large intestine. Waste products from the digestive process include undigested parts of food, fluid, and older cells from the lining of your GI tract. The large intestine absorbs water and changes the waste from liquid into stool. Peristalsis helps move the stool into your rectum.

Rectum. The lower end of your large intestine, the rectum, stores stool until it pushes stool out of your anus during a bowel movement.
7 0
3 years ago
Please help me, im on a pretest..
gayaneshka [121]

Answer:

I would say C. but i don't think it will be

8 0
2 years ago
Where are ribosomes made?
Bond [772]

Answer:

The answer would be C. This is because the nucleus of a cell is responsible for the creation of ribosomes. Hope this helps you :)

6 0
3 years ago
The fingers are
andreev551 [17]

Answer:

Distal

Explanation:

A finger is distal to the wrist, which is distal to the elbow, which is distal to the shoulder.

8 0
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kolbaska11 [484]

Answer:

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Technically it could be both, as they can both be acidic, but honey is lower on the pH scale, meaning it is more acidic and thus will have a larger chemical reaction with baking soda.

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