What atmosphere layer do birds fly in?

I need the answer I have no clue?

Why is the amount of gas in magma important in relation to volcanic eruption? What chemical and physical characteristics of magma are most important whether the magma erupts explosively or non explosively.

Which of the following has NOT influenced the creation of a global popular culture? Internet Television County fairs Large publishing houses Hollywood

How is a star's color related to its temperature answers?

A primary consumer would recelve about how much percent of the original energy that enters an ecosystem from the Sun.

Trees in deciduous forest do what? A. Shed leaves during one season B. Grow in a warm Mediterranean climate C. Have needlelike leaves D. Grow in a climate that is cold year round

How many miles long is the great wall of china

What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north

What is a planetary nebula neither a planet nor a nebula?