Ecology: Flow of Matter (TEKS 12E & 12F)

The most vulnerable part of the earth is the

What role does the sun play in this food web?

Ecologists can learn about ecosystems through

What caused the hole in the ozone?

Acid rain comes mainly from

We know what the ancient atmosphere is like because of

Carbon dioxide levels fluctuate throughout the year due to

All the organisms and their non-living environment in a given area make up 

Most deforestation is due to

The greenhouse effect is created mostly by

A scientist is studying an oak tree to see how much it grows every year.  She is studying

A biologist tests pH levels in a lake to determine how it effects fish there.  He is studying

Invasive species are bad because

Smog is made up of

A group of organisms of the same species in a given area is a

As a result of global warming,

Which country produces the most greenhouse gas?

A scientist studys how prairie grasses compete with non-native plants.  He is studying

All the places on earth that will support life make up the

How is nitrogen gas in the atmosphere converted and brought to earths surface?

Global warming can be largely attributed to

What process removes carbon (CO2) from the atmosphere?

The two areas most affected by global warming are