Lake Ecology
The season in which a thermocline develops
Summer
ice cores
A group of the same species of organisms living in the same area
Population
The flux mechanism of the water cycle where liquid surface water becomes a gas is
evaporation
Changes the atomic mass but not the type of element
number of neutrons
Definition of a thermocline
A sharp change in temperature at a certain depth
The greatest contributor to sea level rise
Ocean warming
The secondary consumer in the food chain grass -> mouse -> snake -> hawk
snake
Humans are changing the carbon cycle by
burning fossil fuels
If an atom has 6 neutrons, 8 protons and 8 electrons, what is the atomic number?
8
Seasons that a lake turnover occurs in
Spring and fall
How burning fossil fuels impacts the greenhouse effect
Carbon dioxide is a greenhouse gas and traps heat, the greenhouse gas layer is becoming thicker
Biomes are defined by
temperature and precipitation
Humans are changing the nitrogen cycle by
Creating and using fertilizers
If one atom gains an electron an _____ bond is formed and the atom that gained the electron is a(n) __________
ionic ; anion
The type of lake where the water is very clear, very little chlorophyll content
Oligotrophic
The four greenhouse gases
Methane, Carbon dioxide, water vapor, nitrous oxides
Why trophic pyramids are pyramid shaped, what happens to the energy in transfers
10% of energy is transferred, 90% is lost as heat
Carbon is stored in plants and released from animals during _______________ and ________________
photosynthesis and respiration
The bond behind oxygen and hydrogen in a water molecule is
polar covalent bond
The eutrophication process in steps
High nutrients -> algal bloom -> algae dies -> bacteria break down dead algae and consume oxygen -> dead zone
Ocean acidification impacts these types of organisms
Organisms with a calcium carbonate skeleton or difficulty bonding oxygen in blood
Energy is a ___________ flow, matter is a ___________ flow
one way ; cyclical
Nitrogen fixation converts _________ to _________
gas nitrogen to solid nitrogen
Water is polar because
oxygen is highly electronegative