Fireflies flicker and flash as they dart through their mating dances, all the while transforming a lovely summer night into a magical evening. While the bioluminescence that allows these insects to glow and gain the moniker “lightning bugs” creates wonder in humans, it is a not-uncommon feature in the animal world, especially for fish and other marine species.
National Geographic defines bioluminescence as light that occurs from the reaction between two chemicals within a living organism: the compound luciferin and either luciferase or photoprotein. The ability to produce light is not just a flashy feature; bioluminescence can give the animal a competitive advantage. For example, deep-sea vampire squids eject glowing mucus to startle predators, and hatchet fish use light-producing organs to adjust reflections off their bodies, masking themselves to prey who are hunting them from below. Other animals that glow or flash to get ahead at sea and on land include plankton, coral, and glowworms.
For decades, scientists and medical researchers studied bioluminescence in nature and have adapted fluorescent genes as biomarkers for many applications. That is how GloFish found their way into home aquariums across the country.
Modern foragers are not Stone Age relics, living fossils, lost tribes, or noble savages. Still, to the extent that foraging has been the basis of their subsistence, contemporary and recent hunter-gatherers can illustrate links between foraging economies and other aspects of society and culture, such as their sociopolitical organization.
Answer: Option C
<u>Explanation:</u>
In the history of human beings on this planet, hunters-gatherers hold the longest history. Even today there are many societies where people rely on foraging for their sustenance and survival and have not adapted to the modern ways of civilised societies.
These modern foragers do not stuck in time and living the life of early man but they have developed well organised social and political structure for themselves. They possess their own culture and rituals to follow and their tribe issues are decided by the well-established political system.
Ivan 1 or Ivan Danilovich also known as Ivan Moneybag or in
Russian Ivan Kalita was the grand prince of Moscow and the grand prince of
Vladimir who was known for policies that increased Moscow's power and
transformed it into the richest principality in northeastern Russia. He had a
reputation for thrift and financial shrewdness that earned him the nickname “Kalita”
or “Moneybag”. Instead of conquering territory, he preferred to purchase. He
also made Moscow the spiritual center of the Russian lands by forming a close
alliance with the metropolitan of the Russian Orthodox Church.
The correct answer is cultural capital. Cultural capital is
defined as the social assets of an individual by which it includes one’s
intellect, speech, the way he or she dress, or even education. This is
responsible for promoting one’s social mobility when in a stratified society.
Answer:
Federal system
Explanation:
A federal system of government exercises a division between three types of government: national, state, and local. Under this principle, known as federalism, every single level of government is sovereign in some areas and shares authority in other areas. A clear example of this is the shared authority of federal and state governments, both of which can levy taxes.
