Which of the following would be an example of positive feedback? thanks! Select one:

Shivering by the muscles when temperature drops.

The attraction of platelets when a wound occurs.

Sweating due to an increase in body temperature.

The reduction of hormone production during pregnancy.

What is the ecological role of food chains and food webs

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

As scientists have investigated evolution from a variety of fields, they have found that some of darwin's orginal ideas were inaccurate or incomplete. t explanation provided by evolution was updated each time to reflect the new information they found. what does this suggest about the theory of evolution? it has become a stronger and clearer theory as new information is collected.