Muscles work by getting electrical impulses from the brain and the impulses signal them to contract by releasing calcium in sarcoplasmic reticulum of the muscle cells. When there’s fatigue, muscles are unable to generate force and it may caused by: nerve or muscle fibers limitations, which may be a result of tremendous workout or exercise. Nerves during neural fatigue are unable to generate signals to the muscles, while reduced activity in muscle fibers disable muscles to contract causing metabolic fatigue.
Answer:
An agreement between citizens and their government
Explanation: social means public so a contract between citizens and the goverment is public.
Answer:
In modern politics and history, a parliament is a legislative body of government. Generally, a modern parliament has three functions: representing the electorate, making laws, and overseeing the government via hearings and inquiries
Answer:
The answer is modelling.
Explanation:
Modelling is a learning method that consists in observing and imitating other people's behaviour. Although it is more common in children, it is also present in adults when facing new situations.
The reproduction (or imitation) stage of modelling can be immediate or delayed. It may also be unconscious, something especially prominent in early chilhood.
The correct answer is letter B.
Explanation: Even for the best studied star we can only measure 4 parameters: mass, luminosity, radius and chemical composition of the outer layers. We can determine the structure of the star with these parameters, because we have one more condition: the constancy of the stars over long periods of time. Even variable stars have long-term stability of the average structure. The existence of fossil algae on the earth over 1 billion years old and fossils up to 3.5 billion years old is evidence that the temperature of the earth cannot have changed by more than about 20 ° C. Therefore, the interior of the stars must be in perfect balance.
