The following are commercially valuable Philippine crops EXCEPT:

The Earth is surrounded by "a sea of air" known as _______ .

Where is the Marble capital of the Philippines?

Which of the following region of the atmosphere is bombarded with highly charged particles that forms fascinating auroras?

The homosphere is the bottom 90 km of the atmosphere where there is a continuous movement of air masses. The term homosphere is derived from the prefix homo. What does the prefix 'homo' means?

The country’s metal deposits is about _______ metric tons.

The country’s nonmetal deposits is about _______ metric tons.

What gas is most abundant in the Earth's atmosphere at sea level?

In this layer, meteors are burned into smaller fragments.

The ______ is the bottom layer of the atmosphere where weather phenomena occur?

Human lifestyle in the 20th century tremendously threatens the sustainability of natural resources.

It is okay to flush chemicals, sprays, medicine, and other toxins anywhere underground.

Plant more trees to stop soil erosion.

Leave electric appliances on standby mode to conserve energy.

Use Eco-friendly building materials to build a new home.

Switch to sustainable lifestyle by using more non-biodegradable materials.

To save natural resources and to bring a change we have to change our habits that exploit our natural resources and directly or indirectly.