7. Why must private ownership of property be guaranteed before a free market economy will work?

The government will retain too much power if there is a guarantee.

Entrepreneurs need to be assured that they will benefit from a successful project.

Without such a guarantee, criminals can steal the profits from a good business.

Unemployment will be too high for the private ownership to work without the guarantee.

I think it would be either B or C

I can't tell between those too I'm sorry

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.'

1. c

2. b

3. a

4. c

5. a

6. b

7. c

8. c

9.b

10. d

just took it 100%