Earth's Systems/Earth & Human Activity
Earth's Place & Biological Evolution
Ecosystems/Molecules & Organisms
Matter & Interaction
100
Freshwater makes up _______% of all water on Earth.

3%

100

Part of an organisms body that is no longer needed.

Vestigial structure (whale hip bones, human appendix)

100

Treatment for bacterial infections

Antibiotics

100

How do you find the number of electrons?

Electrons = Protons = Atomic Number

200

These act as a natural filter for water sources. They contain brackish water. 

Estuary

200

This law states that the oldest rocks are at the bottow and the youngest are at the top. 

Law of Superposition

200

The difference between biotic factors and abiotic factors. 

Biotic - living

Abiotic - nonliving

200

Difference between melting butter and browning butter.

Melting butter is a physical change because it is changing the states of matter. Browning butter is a chemical change because it is producing a new substance. 

300

As salinity increase, density ______________

Increases

300

These help us determine during which specific time of history an organism lived. 

Index fossils

300

Size the population that can be supported by an ecosystem.

Carrying Capacity

300

How many neutrons does Manganese have?

30 neutrons (55-25)

400

These types of resources cause an increase in greenhouse gases. 

Fossil fuels (I will accept nonrenewable resources)

400

Theory that Earth has always changed in uniform ways. 

Uniformitarianism

400

The process where carbon dioxide is produced. 

Cellular respiration
400

What is the most reactive family of the periodic table?

Alkali Metals because they only need to get rid of 1 valence electron. 

500

This allows nutrients from the deeper parts of the ocean come to the top for organisms. 

Upwelling

500

The ability to survive in an environment due to the traits and attributes an organism has. 

Natural Selection

500

How does an infectious disease expand. 

Outbreak ---> Epidemic ---> Pandemic

500

Balance the chemical equation.

Coefficients are 1, 5---> 4, 3

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