The United States and Canada share which system of government? A. bicameral legislature
B. unicameral legislature
C. constitutional monarchy
D. constitutional democracy

Needed fast 15 points the process of natural selection favors certain characteristics in organisms, while it selects against other characteristics. what would happen if there was zero variation between all of the organisms on earth? a.organisms would evolve to increase variety b.natural selection would operate faster c.less food would be available d.evolution through natural selection would not occur

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.