The name of the neurotransmitter that is released by all neurons that stimulate skeletal muscle is called:

Match the types of competition to their descriptions.

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

In which state was more than 100 billion tons of coal mined in 2005?