Eras, like the paleozoic, mesozoic, and cenozoic periods are separated into periods by which marker? question 4 options: changes in rock layers species extinction 100 million year chunks the types of living organisms that were present

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory

What is most likely the effect of unrestricted hunting of gray wolves on the food web of the region

How does an island of development promote economic development? a. islands of development contribute to mining industries because they continue to form mountains.b. islands of development have been ruled by dictators since the 1950s as part of an economicexperiment.c. islands of development promote international development by creating new islands.d. islands of development stimulate job creation in underdeveloped nations. select the best answer from the choices provided.0 000