1. Alfred Wegener hypothesized that all of the continents on Earth move. According to his Idea all seven continents A:are always moving away from each other and have never been together. b:were once joined together.

c:will eventually fall off of the Earth.

d:are being pushed upward from heat within Earth's crust.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

The distribution of related animals and plants across the world