This is called sexual dimorphism or plumage dimorphism in particular. During mating season male American goldfinches shed and grow bright yellow feather to attract female goldfinches, the brighter the color higher the chance to find a mate.During this season, the male goldfinch is aggressive in attacking males who goes into his territory.
Answer:
a. In Left gaze bias experiment, scientists tested to see if dogs portrayed left gaze bias like humans when presented with pictures of human or dog faces.
b. The left gaze bias looks at the right side of ones face at first site and dogs do this with humans but not other dogs.
c. With the encounter with other human faces, humans look at each other with left gaze bias.
d. The scientist were testing if the dogs recognize expression regarding direction of gaze same as human.
Answer:
continental and oceanic lithosphere
Explanation:
<span>The answer is nuclear imaging. A subject is asked to take in a radionuclide (radioactive
isotopes) and as the radioactive material passes though the body, it continually emits radiation that is detectable by an instrument such as a gamma camera. Examples of nuclear imaging
techniques are SPECT and PET.</span>
Sex cells are formed during mitosis.
