Jake had a great time snowboarding with his friends. which of these is a likely result of his activity?

an increased level of dopamine that doesn't reduce brain signals
a decreased level of pleasure responses that doesn't reduce brain receptors
an increased level of addiction that is created by dopamine production
a decreased level of mental cognition, prompting a desire to repeat the experience

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.

Which hypothesis most likely explains the results at 60°c and 70°c

4.explain how these geological processes and interactions have changed earth's surface through the years. be sure to use evidence to support your answer • earthquakes • faults • ocean formation • mountains • volcanoes • island chains • seafloor spreading