U3L4 Flashcards
_______ like oil and coal are commonly used to meet energy needs.
Fossil fuels
Organisms take in oxygen and release carbon dioxide through the process of _______.
respiration
When two forces or processes are balanced, they are in ________.
equilibrium
Carbon dioxide is a ______ because it traps heat in Earth’s atmosphere.
greenhouse gas
_______ makes it more difficult for marine organisms to make shells.
Ocean acidification
Earth’s ocean have five major ______, or systems of rotating ocean currents.
gyres
Ocean currents make up the _______ that distributes heat on Earth.
global conveyer belt
A change in a system that leads to more changes is known as _______.
feedback
Earth experiences low global temperatures during a ______?
glacial period
An _____ is characterized by high global temperatures.
interglacial period
Current changes in Earth’s climate are happening on a larger _____ than in the past.
scale
Earth’s average surface temperatures are rising in a phenomenon called _______.
global warming
______ can be measured through factors like air temperature, sea levels, and carbon dioxide levels.
Climate change
Ocean _____ of saltiness, has increased as global temperatures have risen.
salinity
_____ occurs when ice melts more quickly than new snow can replace it.
glacial retreat
