What is the most abundant element in the Earth's atmosphere?

What is the correct order of Earth's atmosphere?

In which layer do virtually all weather phenomena take place?

What is the basis for the division of the layers of the atmosphere surrounding Earth?

Why is the presence of ozone above the troposphere is important for the survival of living things on Earth?

Which of the following correctly describes the stratosphere?

Temperature decreases with altitude in the ____________________.

What happens to the temperature in the troposphere as altitude increases?

Which property of water enables it to be an effective coolant?

What property of water is most important for living organisms?

Which of the following major processes are involved in the water cycle?

Water returns in the Earth’s surface through the process of __________.

Which best explains why so little of the water on earth is available for human use?

Which factor will increase the salinity of seawater in a given area?

Which two sources of freshwater are used by municipalities for drinking water?

Which represents the distribution of water on Earth?

Smoke, fumes, ash, dust, nitric oxide and sulphur dioxide are the main sources of ________.

The major photochemical smog is________.

Which of the following statements is true about SMOG?

Which of the following particles is called the particulate pollutants?

The amount of flowing dirt in the water is

Temperature, turbidity, and suspended sediment are all

Macroinvertebrates such as stoneflies, mayflies and water boatmen require high levels of dissolved oxygen and their abundance is an indication of:

A measure of how suitable water may be for drinking

What two agriculture nutrients cause the greatest problems in surface waters? (lead to algae growth and depleted O2)

Natural resources are materials or elements from the environmental that people __________.

What do you call a resource that people can use again and again but its supply can be replaced?

Which one is an example of a renewable resource?

Why are coal, petroleum and natural gas considered nonrenewable resources if they were produced from plant and animal remains?

Which of the following list of materials correctly match of which it was produced?

Many metal products and by-products we use everyday are derived from metal containing rocks called __________.

This mineral mined from rocks is very essential in everyday life use. It is very valuable in building construction, bridges, bodies of cars and the like.

Which of the following is the name for a solid fossil fuel that formed deep in the Earth over millions of years?

The following are considered megadiverse countries except

Our forests host__________ species of indigenous trees.

Forest cover is still shrinking at an average rate of __________.

The remaining primary mangrove forest are found in these provinces except

Mangroves are important because: I. it act as natural buffer of coastal areas against storms' wave and wind erosion and flooding. II. it serves as sinks for organic or inorganic materials including pollutants

The following are the reasons for land degradation except __________.

All of the following are the reasons why we are currently in the middle of a water crisis except __________.

Our country ranked _____ in the world in number of plant species.

__________ is the center of the center of marine shore fish diversity.

You happen to pay a visit to a relative in the province. You have observed that living practices are simple. But the practice of burning their garbage to keep them from filing up caught your attention. What can be your best mode of action?

Which of these is NOT an example of how your community uses natural resources?

An increase in greenhouse gases has been linked to global rise in temperature. Which of these activities contribute to high concentration of greenhouse gases in the atmosphere?

Which is a way we can protect our environment?

The process of using resources wisely is called?

A hectare of land can only support about 10 deer, 100 snakes and thousands of mice. It only tells us that there are __________.

In this environmental principle, it is said that "Humans are the only ones made in God's image and have been given the right to have dominion over all His creations.

To help conserve our environment, we must __________.