Daily Current Affairs MCQ: 5th October 2024 - CUET Commerce MCQ

The Negro River has made headlines because it has reached its lowest water level in 122 years, as reported by Brazil’s geological service. This significant drop in water level can impact the local ecosystem, wildlife habitats, and the communities that rely on the river for resources. Such low levels can also affect navigation and fishing activities, highlighting the environmental changes occurring in the region.

Pseumenes siangensis is distinguished by its behavior of constructing small, pot-like mud nests for its larvae, a characteristic typical of potter wasps. This nesting behavior is important for protecting the larvae from predators and environmental conditions. Additionally, the discovery of this species enriches the biodiversity of potter wasps in India, as it adds a new member to the previously limited representation of the genus Pseumenes in the country.

The National Agriculture Code aims to create a comprehensive manual that covers the entire agricultural cycle, from crop selection to post-harvest management. This initiative seeks to establish practical guidelines that consider various factors such as agro-climatic zones and crop varieties, thereby promoting informed decision-making among farmers and stakeholders involved in agriculture. This approach supports the development of quality standards within the agricultural sector. Additionally, the NAC covers innovative practices like natural and organic farming, highlighting its modern relevance.

Motor Neuron Disease (MND) is defined as a rare condition that results from the progressive degeneration of motor neurons, which are crucial for transmitting signals from the brain to muscles. This degeneration leads to muscle weakness and atrophy, significantly affecting voluntary and involuntary movements. While MND can arise from various genetic, environmental, and lifestyle factors, it predominantly affects older adults. Understanding MND is vital for developing targeted therapies, as current treatments focus on symptom management rather than curing the disease. An interesting fact is that about 20% of MND cases have a genetic component, highlighting the importance of genetic research in understanding the disease.

The recent accomplishment in neuroscience is the successful mapping of the entire brain of an adult fruit fly, Drosophila melanogaster. This groundbreaking work involved an intricate process of creating numerous sections and generating millions of images to detail the brain's structure. Such research is pivotal as it provides insights into neural functions, which can be extrapolated to understand more complex brains, including humans. Interestingly, fruit flies are extensively used in genetic research because their neural mechanisms show similarities to those in humans, making them valuable for studying genetic influences on behavior and diseases.

Ceres is significant as it is the largest object in the asteroid belt located between Mars and Jupiter and is classified as a dwarf planet. Discovered in 1801, it was the first identified object in the asteroid belt and reclassified in 2006 due to its size and unique characteristics. Ceres is intriguing because it may have once contained a muddy ocean, suggesting that it has a complex history and possibly the conditions for life. Notably, it is the only dwarf planet situated in the inner solar system, and NASA's Dawn mission provided valuable information about its surface and composition, enhancing our understanding of planetary formation and evolution.

From 2000 to 2023, India experienced a notable 72% increase in the number of Total Protected Areas. This reflects the country's commitment to conservation and environmental protection. Protected Areas are crucial for biodiversity, providing habitats for various species and helping to maintain ecological balance. Additionally, this increase underscores the importance of preserving natural resources amidst growing environmental challenges.

The System of Environmental-Economic Accounting (SEEA) aims to illustrate the interactions between the economy and the environment. By providing a structured framework, it helps in understanding how environmental assets affect economic activities and vice versa. This approach is crucial for sustainable development, as it allows policymakers to make informed decisions that consider both economic growth and environmental sustainability. An interesting fact is that the SEEA is used internationally, allowing countries to compare their environmental and economic data effectively.

The main advantage of circular migration for host countries is the acquisition of a skilled workforce to fill labor shortages. This system allows host nations to benefit from the expertise of international workers without the long-term implications of permanent immigration. Migrants enhance their skills while working abroad, which helps the host country meet its labor demands effectively. Additionally, this arrangement supports the migrants by providing them with valuable work experience and better employment opportunities upon their return home. Interestingly, circular migration can lead to a "triple win" scenario, benefiting migrants, home countries, and host nations alike.

Pumped hydropower projects serve as large-scale energy storage systems that help maintain grid stability. They operate by pumping water from a lower reservoir to an upper reservoir when energy demand is low and releasing it through turbines to generate electricity when demand is high. This functionality makes them akin to massive batteries, allowing for the integration of renewable energy sources and balancing supply and demand in the electric grid. An interesting fact about pumped storage is that it is the most widely used form of energy storage globally, illustrating its importance in modern energy systems.