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ivann1987 [24]
4 years ago
14

How did stone tools change over time? Why do you think these changes took place so slowly? ( you can get 25 points!!!!)

Social Studies
2 answers:
Dennis_Churaev [7]4 years ago
8 0
Stone tools changed over time because people kept finding new ways to use stone tools. These tools were altered according to the environment around them. If there were elk or caribou around, the early people would make stone arrowheads to hunt the animals, but they would need a completely different tool to transport things. These changes took place slowly because things changed slowly. You don't need to figure out how to harvest plants in the winter, and you don't need to figure out how to keep warm in the summer. Also, it is hard to invent things. You have to try many times to get things right, and it would take even longer then than it does now to figure things out because of the limited materials available.
Rzqust [24]4 years ago
5 0
They changed over time by finding the right ingredients such as iron, metal, or steel to forge different creations. They took so slowly because no one was discovered the things to make stone tools.
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While on a camping trip, Brian collects a white tadpole from a pond and takes it home. The tadpole develops into a white bullfro
Drupady [299]

Answer:

This is an example of gene flow.

Explanation:

Notice that Brian did not release the frog in its original pond, but in a local one. Gene flow or gene migration can be described as the transfer of genetic variation from one population to another. It is an important way to transfer genetic diversity between different populations, and it usually takes place through the migration of members of a population. In this case, the frog did not migrate by itself, but was taken by Brian instead.

8 0
3 years ago
Describe two<br> determinants factor of population change with example​
sergiy2304 [10]

Answer:

Determinants of Population Change

November 22, 2017

Three major factors that determine the change in population of any country viz. Fertility, Mortality and Migration. Of these, migration is not a major determinant of population change in Indian context. So, a detailed view of Mortality and Fertility assumes significance in the context of India.

Contents

Fertility

Mortality

Fertility

The following are the basic determinants of fertility.

Demographic Determinants

Age Composition: If a country has a more youthful population, then it tends to be a leading contributor to the world’s population growth. Many Asian countries, African and the Latin American countries fall in this category.

Duration of Marriage: There exists a positive correlation between fertility and duration of effective marriage. For example, in India, incidence of early marriage is a common phenomenon and hence greater is the fertility rate.

Balanced Sex Composition: The balanced sex composition is a major demographic determinant of fertility. For example, the male dominated urban centres shows low birth rate when compared to rural areas.

Degree of Urbanization: Usually, the urban areas have lower birth rates when compared to rural areas. In urban areas, it has been observed that various socio-economic factors create ethos for lower fertility rates.

Participation of Women in Economically Gainful Activities: It has been observed that the contribution of working women to human fertility is low when compared with the non-working females. Exposure to the outside world has made the working women to get more awakened socially and economically and thus influences their fertility behaviour.

Socio-cultural Determinants

Religious Background: Almost all the religions in the world except Buddhism are opposed to the deliberate control on human fertility. But the degree of control varies with religions. For example, Kingsley Davis in his study has observed that birth rates of Muslims in India are significantly higher than that of the Hindus living in similar environments.

Educational Level: Level of Education, particularly of girls, has been observed to have a far reaching impact upon the fertility patterns. In fact, education in general helps in bringing down the birth rate.

Age at Marriage: It has been widely observed that there exists an inverse correlation between birth rate and the age at the time of marriage. In Indian context, it is estimated that the birth rate can be brought down by at least one-third if all females in the country marry after attaining the age of 19.

Traditions & Customs: It has been found that societies that allow polygamy, polyandry, loose marital ties and liberal sexual behaviour are often characterised with low fertility levels due to greater incidence of venereal diseases.

Primacy of Individuals: The status of man, woman and even the child is an important determinant of a family size. In India, the low status of women is an important factor for high fertility.

Government Policies: The population policies adopted by various countries have a direct bearing upon the fertility rates prevailing in those countries. For example, China’s strong population policy has helped it in bringing down its birth rate.

Economic Determinants

Income Level of Family: It has been observed that there exists a negative correlation between the income level of a family and the family size. People belonging to the middle income group seem to apply the strictest control over the size of the family. On the other hand, among the lower income families where children are considered as a potential source of augmenting the family income, minimum restrictions are placed on the family size.

Standard of Living: In General, the poor people from across the world exhibit high birth rates. Similarly, the rich people tend to show low birth rates.

Dietary Habits: Studies conducted in animals shows that the higher intake of protein tends to reduce fertility.

Other Causes

Type of Family System: People living in joint family system tend to have more children. In the joint family system, the young couples receive help and support from the elders in the family to raise their children.

Factors responsible for high fertility rates among Indian Women

Universality of the institution of marriage: In India, marriage is considered as a necessity for women.

Lower Age of Marriage: In India, girls are traditionally married at a very early age. This makes Indian women biologically capable of bearing more children.

Desire for Sons: Preference for a male child is deeply ingrained in the Indian society. Birth of a son is considered important for extending the family line and for taking care of the parents in their old age.

High IMR and CMR: High infant and child mortality rates are also an important determinant that determines the size of the family. Women bear more children in the hope that at least few of them will survive up to adulthood.

Environmental factors: The countries with hot climate tend

7 0
2 years ago
A client with hypertension has been prescribed a low-sodium diet. the nurse teaching this client about foods that are allowed sh
ivanzaharov [21]

In a situation wherein a client has been prescribed a low-sodium diet due to him being a patient of hypertension, it is advisable for such person to include fruits and vegetables in his diet. Therefore, the option 4 holds true.

<h3>What is the significance of low-sodium diet?</h3>

A low-sodium diet can be referred to or considered as the diet that does not include the consumption of foods that are high in salt contents. The water contents and natural sugar contents of a low-sodium diet is usually on the higher side.

Fruits and vegetables that can be used in preparation of summer squash are some of the best foods that can be consumed as a part of a low-sodium diet.

Therefore, the option 4 holds true and states regarding the significance of low-sodium diet.

Learn more about low-sodium diet here:

brainly.com/question/26915025

#SPJ4

The complete question has been added below for better reference.

A client with hypertension has been told to maintain a diet low in sodium. A nurse who is teaching this client about foods that are allowed includes which food item in a list provided to the client?

1. Tomato soup

2. Boiled shrimp

3. Instant oatmeal

4. Fruits

3 0
1 year ago
_____ are groups in which members are separate from their group and are responsible for their destiny.
OLga [1]
<span>“Individualistic culture” are groups in which members are separate from their group and are responsible for their destiny.</span>

<span>Individualistic culture refer to a culture or society whose main attribute is not individualism which means that in such society the stress is on individual as opposed to other cultures where emphasize is usually on the entire group.</span>

6 0
3 years ago
Did the enactment of Lend-Lease make American participation in World War II inevitable?
AlexFokin [52]

Answer:

Most importantly, passage of the Lend-Lease Act enabled a struggling Great Britain to continue fighting against Germany virtually on its own until the United States entered World War II late in 1941 so yes it did

Explanation: mark as brainlest

5 0
3 years ago
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