¿qué similitudes de tipo físico encuentras entre la cuenca del río Orinoco, la del Amazonas y la del Plata?

Landmasses on a flat map look distorted because

In a command economy, the majority of goods and services are provided by the

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions