If all firms expect greater demand for their products or services, they will hire resources like labor and capital and the economy will experience .

more, growth

Explanation:

If all firms expect greater demand for their products or services, they will hire more resources like labor and capital and the economy will experience growth.

For an economy to grow, human capital, labor force, and technology can not be exempted. The quality of the materials used also plays a vital role as well. Once all these are in place, then the economy while start experiencing turn around.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'