Which of the following are true about positive feedback mechanisms? Check all that apply. They help to form blood clots in response to an open wound.

They respond to changes by pushing back in the opposite direction.

They cause the body to sweat when the outside temperature is too warm.

They accelerate a process that has already started.

Used primarily for thickening sauces and soups, a (paste/roux/stock) is made from a (1: 2/2: 1/1: 1) fat and flour.

George’s daughter was born with a hole in her heart. he met up with a group of individuals of questionable character who agreed to deliver to george a healthy heart that could be a transplant for his daughter for a sum of $20,000. the group george negotiated with failed to deliver the heart. george tried to sue when he did not receive the heart but was surprised when the courts would not enforce the agreement.can george force performance of this contract? why or why not? (10 points)will he be able to recover the $20,000 that he gave for the heart? why or why not? (10 points)

True or false a fertilized cell divides many times to form an embryo