Which statement best describes the purpose of earth's spheres? they work together as open systems to cycle matter through ecosystems. they work independently as closed systems to cycle matter through ecosystems. they work together as open systems to move matter to living and nonliving parts of earth. they work independently as closed systems to move nutrients to living and nonliving parts of earth.

They work together as open systems to cycle matter through ecosystems.

Explanation:

which statement best describes why a government’s actions are important in macroeconomics? check all that apply.

1 government controls industry through policy.

2 government is both a consumer and a producer.

3 government can prevent changes and challenges.

4 government can use policy to influence the economy.

5 government can accurately predict economic trends.

1 , 2 & 4 for edgenu

according to this graph, how does supply behave in the long run?

a ]output remains constant.

b ]output increases.

c ]output cannot be predicted.

d ]output decreases.

the answer is a ]   for edgenu