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Basalt is fine-grained and is primarily composed of mafic minerals. 

Imagine that temperature cools. This leads to more snow. More snow increases the albedo of Earth’s surface. As the albedo increases, more sunlight is reflected back to space and the temperature gets colder. What type of feedback does this represent?

What are two major differences between Venus and Earth that have led to the much more hospitable conditions we currently experience here on Earth? Select the two that apply

You analyze a bone fragment for carbon-14 and determine that 2.7 half-lives have occurred. Carbon-14 has a half-life of 5,730 years. How old is the bone fragment?

What processes would need to occur to transform a sedimentary rock into a different sedimentary rock?

Flowers (angiosperms) evolved before grasses. 

The Easterlies flow from west to east.

Relative to each other, which of the following groups of rocks is least dense, densest, and in the middle?

The two primary elements to form during the Big Bang were hydrogen and helium.

Which of the following ideas represents our best explanation for the formation of Earth’s major surface features?