Match the description to the correct ecosystem. Say the letter with the number so I know so write it like this 3. h. write the answer like that :) 1. alpine ecosystem
2.subalpine ecosystem

a. It is called a land of "extremes" because of strong winds and very cold weather

b. It is found right below the tree line.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2