I think it’s b bc paper was invented in china so it can’t be c or d. also why would they ban these produces if they promote literature and provide as useful tools…so not a.
The Space Race was a period when the United States and Soviet Union
competed for technological advancements and scientific accomplishments.
This competition was a result of the Cold War that started after World
War II.
Exploring space during this era (late 1950's through the
beginning of the 1970's) was an unprecedented adventure for its time.
The world was shocked when the Soviet Union were able to launch Sputnik (
a satellite) into space. After this momentous accomplishment, the US
followed sending their own satellite into space several months later.
Both
of these countries took a significant risk, as their satellites,
spaceships, and other equipment could completely blow up. This would
result in the deaths of citizens. Along with this, they had to risk the
financial risk that this race caused. Each country poured in hundreds of
millions of dollars into their space programs over the course of 2
decades. If countries failed to achieve any breakthroughs, then this
money would have been wasted.
Despite the risks, this space race
had several positive effects on the world. This includes the
implementation of satellites that allow us to use GPS, the invention of
memory foam mattresses, and increased funding for public education.
Answer:
Answer is Option D: the concept of long-term potentiation
Explanation:
Neurons work with each other through electrical events. At synapse, which is the "junction" between two neurons, a chemical neurotransmitter is released by neuron A , caused by an action potential.
Memory is often described as a function of brain cells which form connections by getting together. "Long-term Potentiation (LTP)" is a constant increase in strength after a high frequency chemical synapse. Thus, this is the concept of LTP says that if two neurons "activate" at a given time, then the "connection" between them will increase and as a result the memory will also get strengthened.