Answer:
Nearly 3 billion additional urban dwellers are forecaster by 2050, an unprecedented wave of urban growth. While cities struggle to provide water to these new residents, they will also face equally unprecedented hydrologic changes due to global climate change. Here we use a detailed hydrologic model, demographic projections, and climate change scenarios to estimate per-capita water availability for major cities in the developing world, where urban growth is the fastest. We estimate the amount of water physically available near cities and do not account for problems with adequate water delivery or quality. Modeled results show that currently 150 million people live in cities with perennial water shortage, defined as having less than 100 L per person per day of sustainable surface and groundwater flow within their urban extent. By 2050, demographic growth will increase this figure to almost 1 billion people. Climate change will cause water shortage for an additional 100 million urbanites. Freshwater ecosystems in river basins with large populations of urbanites with insufficient water will likely experience flows insufficient to maintain ecological process. Freshwater fish populations will likely be impacted, an issue of special importance in regions such as India's Western Ghats, where there is both rapid urbanization and high levels of fish endemism. Cities in certain regions will struggle to find enough water for the needs of their residents and will need significant investment if they are to secure adequate water supplies and safeguard functioning freshwater ecosystems for future generations.Explanation:
Answer:
True
Explanation:
Conditioned response: In psychology, the term conditioned response is considered as one of the important parts in the theory of classical conditioning which was introduced by Ivan Pavlov while conducting an experiment on dogs.
Conditioned response is being triggered when a conditioned stimulus is being attached, connected, or associated with an unconditioned response.
In the question above, the given statement is "true".
A major city of the pre-Vedic culture of the Indus river valley was Harappa.
A pre-Aryan civilization, according to the majority of historians, was the Indus Valley Civilization. A rich Vedic culture was gradually developed after the Aryan-speaking people who formerly colonized India arrived from the Central Asian steppe highlands. The two most well-known cities of this civilization that have been excavated are Harappa and Mohenjo-Daro, which are both considered to have once been home to populations of between 40,000 and 50,000 people. This is astounding when one considers that the average population of ancient towns was 10,000.
Indus River valley is where the Harappan civilization was situated. Mohenjo-Daro and Harappa, two of its major cities, were situated in Punjab and Sindh, respectively, in modern-day Pakistan. Both the Gulf of Khambhat in the south and the Yamuna (Jumna) River in the east were within its scope.
Hence, option A is the correct answer
To learn more about Indus river valley here,
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- Slowly increase the age that people would be entitled to the benefits
- Lower benefits given to people who already make a sizable income without any other forms of aid
- Increase the amount of money that employees must contribute to the Social Security Trust Fund
Answer:
Television, radio, and cell phones
Explanation: