The ionosphere is

Used to send radio singles

The coldest layer in the atmosphere

Made of charged atoms called ions

Responsible for earth's weather

If you are an athlete that exercise extensively, what organelles might you expect to see more of in your cells? (hint: cell parts for "power house")

Many scientist are looking at alternative energy sources to replace fossil fuels. This can best be explained by which statement.

Which effect is one likely result of a forest fire?

What kind of bond is broken and reformed to release energy from food molecules?

How do antibiotic-rich environments like hospitals speed up the rate at which superbugs increase their percentage of the bacteria population?

Cells in multi-cellular organisms A) All look the same B) All have the same function C) Are often quite different from each other D) Are the same size in every part of the organism

Why is it necessary to cool a hot supersaturated solution slowly during a recrystallization?

Name the two energy-equivalent molecules that contain three phosphates as part of their structure. what makes these two molecules different? how many high energy phosphate bonds do they contain? nutrition

During what period of time has the sunbelt region of the u. s. grown most quickly?

The axial skeleton includes the A) vertebra, skull, and ribs B) hip bones, knees, and feet C) shoulder bones, elbows, and hands D) bones of the fingers and toes