A large body size is advantageous for horses, so horses became larger and larger throughout their evolutionary history. this is an example of Directional selection
The domesticated horse is a hoofed, one-toed mammal. It is one of the two existing subspecies of Equus ferus and a member of the taxonomic family Equidae. Eohippus, a small animal with several toes, was the ancestor of the horse, which developed over the course of the last 45 to 55 million years to become the huge animal it is today. Horse domestication is said to have started approximately 4000 BC and expanded significantly by 3000 BC. The caballus subspecies of horses are domesticated, yet certain populations of domesticated horses roam freely as wild horses. Since this term is only used to refer to horses that have never been tamed, these feral populations are not actually wild horses.
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Answer:
B- CLOCKSPEED
Explanation:
Clock speed is the rate of change in products, processes within an industry. New product development is found within an industry's clockspeed that gauges the velocity of change in the external business environment. Industry clock speed influences investments in product and technology development and how a firm engages with its supply network to leverage suppliers knowledge.
Answer: option d
Explanation:they are also normally called noradrenaline.
They do help by constant regulating of the blood pressure and to increase the sugar (glucose) level content in the blood. It help majorly to lift up (increase) the rate as well as the force of the contraction of the heart and also in do lead to an increase in muscle contraction due to the fact that they are push out(realeased) from the sympathetic nerve fibre ends.
The purpose of an economic model is to explain the behavior of the issue being examined.
c) explain the behavior of the issue being examined.
<u>Explanation:</u>
The thesis of the economic behavior that can be tested is obtained through an economic model. The economic model describes reality in simplified manner.
Economists generally rely on economic theories or models to study the issues in real-world. The economic models propose the economic ideas that will be helpful for the individuals, company or the government to make decisions. The economic model explains the behavior of the issue that is examined, and helps economist to make predictions about the real world.
Economists use economic models to answer questions.
During the valsalva's maneuver, glottis is the part of the larynx closes to increase intra-abdominal pressure, such as to help with defecation
The glottis is a slit-like opening on floor of the pharynx, is called valve that can controls airflow in and out from the respiratory passages. The glottis may opens directly into the boxlike larynx. This voice box is occurs in all the amphibians but is anatomically most of the complex in frogs.
The larynx, can commonly called the voice box or glottis, is the passageway for the air between the pharynx and above and the trachea below. It extends from the fourth the sixth vertebral levels.
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