The appearance of banded iron layers in the rock record between 1.08 and 3.8 billion years ago reflect the alteration of oxygen-rich and oxygen-poor conditions in the ocean at that time.

True or False

Which of the following factors could explain a gradual warming trend in a planet's climate? A) a decreasing albedo. B) a decrease in the amount of greenhouse gases. C) a decrease in the brightness of the Sun.

Prompt Would a year on the planet Neptune be longer or shorter than an Earth year?

Wich has the most land area Idaho or New Hampshire? Which is the Capital of Maryland, one of these two states that gave land to Washington DC?

Which does not affect the amount of destruction caused by earthquake vibrations? a) the material with which structures are built b) the design of the areas structures c) the weather on the day of an earthquake d) the intensity and duration of the

Hong Kong, South Korea, Taiwan, and Singapore are sometime referred to as the "Four ___ ___" because of their rapid industrial economic growth.

On a planimetric map, the ___ is used to convert between the distance on the map and the actual distance in real life.

Will climate change will result more or fewer landslides or there be about the same number as now?

When lava cools, it forms a hard rock. True or false?

The total process that turns sediment into rock is called perrifaction, lithification, or metamorphesis?

Renewable resources: A. have finite supplies that will one day be used up. B. include iron, gas, and copper. C. are all living resources. D. can be replenished over months, years, or decades.