Which of the following is true about estuaries?

Which of the following is true of coral reefs?

Which of the following is true about biodiversity?

Which of the following is an example of an invasive species that is causing biodiversity declines in North America?

Gracias a su valentía, el __________ de la democracia se volvió posible con la derrota de Trujillo.

Which of the following is true about the human population?

The majority of the freshwater on Earth is readily available to humans for drinking and agriculture.

In which stage of the demographic transition would you expect to see death rates falling due to improved sanitation and health care?

Which of the following explains why pesticide resistance can become more common in a field where pesticides are being sprayed?

Match the GM crop with the description of how it has been modified.