Geology
Chemistry
Ecosystems
Hydrosphere
Microbiology
100

The law that states that older rock layers are below newer ones

Law of Superposition

100

The column in which elements are most reactive.

 1

100

Break down dead or dying organisms

decomposers

100

% of earth's water that is fresh

3%

100

This type of infection can be treated with an antibiotic.

Bacterial infection such as strep throat

200

These are good to determine the age of rock layers, because they were abundant and only lived a short period of time

Index fossils

200

The atomic number is the number of _______

Protons

200

the top level of the energy pyramid

apex predators

200
Where most fresh water is located on Earth.

Frozen in glaciers and mountaintops

200

COVID-19 and the common cold are examples of this type of infection.

viral

300

Ice cores help determine this

Past climate

300

The 3 main categories of elements

Metals, Nonmetals, Metalloids

300

Eats plants and animals

omnivores

300

3 most common dissolved gases found in oceans.

CO2, N, and O2

300

Prokaryotic means...

Single celled organisms

400

Another word for a crack in a rock layer

fault

400

The electrons in the outer cloud layer are called____

Valence electrons

400

2 on a pH scale is considered to be

very acidic

400

The process in which an over production of algae makes water quality poor.

eutrophication

400

When diseases are affecting many countries it is...

a pandemic

500

A fossil that has been replaced with minerals and is hardened like a rock is a

petrified fossil

500

A metal that can be hammered into a thin sheet is_____

malleable

500

The difference between matter and energy in a food web

matter is cycled (can't be created nor destroyed) and energy flows from one thing to another until there is no more

500

The ocean has the highest, then estuaries, then fresh water...

salinity

500

Genetically Modifying corn to produce bigger stalks is an example of

biotechnology

M
e
n
u