Match the sphere with its description.

1. contains the earth's landforms

2. contains the earth's life forms

3. contains the earth's air

4. contains the earth's water

Lithosphere, Atmosphere, Hydrosphere,

Biosphere

Why is calibration of sampling equipment and monitors an important step in the sampling process?

How much of the earth's surface is covered by water?

What do scientists predict killed the dinosaurs? A) Aliens B) People C) Pollution D) Climate Change Radioactive decay occurs when atoms A) lose mass. B) join with atoms of another element. C) break down to form atoms of another element.

How much of earth's surface water exists in the oceans? how much of earth's surface water exists in the oceans? one-quarter of earth's surface water exists in the oceans. half of earth's surface water exists in the oceans.

Which of the following is an effect of social reforms of the 19th and 20th centuries? A) Agricultural output decrease B) The population density in urban centers decreased C) The length of a normal work day increased D) The life expectancy for

Explain why resource availability and allocation are an important concem for governments. Anyone know this

What encouraged the aryan people to settle on the Indian subcontinent A: large Cities for settlement B: herding lands in central India C: mountainous lands near Nepal D: farmland in the Indus River Valley

How are the troposphere and the stratosphere different

Which region dominates the international tourism market as it receives 33% of the 911 million tourists worldwide? A. Europe B. South America C. Asia D. North America

How do the continental coastlines support the theory of continental drift?