Which conditions are necessary for rain to form?a The temperature of the air below the cloud is above freezing.

b
The temperature of the air below the cloud is below freezing.

c
The sky has no clouds, and the temperature of the air is cold.

d
There is a warm layer of air and a cold layer of air closer to the ground.

Martin, a 32-year-old human relations administrator at a university, believes that all professors over age 50 are incapable of learning the new educational technologies and are content to keep presenting their same "tired, boring" lectures. he often expresses these views to other administrators and does not encourage any of the "older" faculty members to attend professional development meetings related to new teaching approaches nor does he suggest that the university send them to any of the technology conferences. martin is exhibiting

In a small, closed economy, national income (gdp) is $350 million for the current year. individuals have spent $100 million on the consumption of goods and services. they have paid a total of $60 million in taxes and the government has spent $75 million on goods and services this year. use this information and the national income identity to answer the questions. how much does the economy spend on investment?

One result of recent migration trends is that the workforce in europe has become