What might cause birds in population a to immigrate to the island? How will the level of competition among birds in population b change if many birds from population A join population b

Could someone me with number one you

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.

When does an organism become an adult during a life cycle? a)before metamorphosis is complete b)after producing offspring c)after development is complete d)before gametes fuse