This is what happens when water changes state into a gas and enters the atmosphere.
What is evaporation.
100
This is the process by which plants take carbon (in the form of CO2) from the atmosphere.
What is photosynthesis.
100
This "fixes" nitrogen in the atmosphere.
What is lightning.
100
This is the ultimate source of energy for all organisms in feeding relationships.
What is the sun.
100
This is what is stated by the law of superposition.
What is that the rock layers at the bottom of an undisturbed area of sedimentary rock are the oldest, etc.
200
These are 4 types of precipitation.
What are rain, snow, sleet, hail.
200
This is how a first-order consumer gets carbon into its body.
What is by eating a producer.
200
This is why nitrogen needs to be "fixed".
What is so that organisms can use it in their cells.
200
This is why population size decreases at every level of an energy pyramid.
What is because 90% of the energy at each level is used by the organisms at that level. Only 10% of the energy is useable by the next level, which means that not as many organisms can be supported.
200
This is stated by the law of conservation of matter.
What is that matter is neither created nor destroyed during a chemical reaction. The amount of matter in the reactants is the same as the amount of matter in the products.
300
This is what happens when water vapor in the atmosphere changes state and forms water droplets.
What is condensation.
300
This is how a predator gets carbon into its body.
What is by eating prey.
300
This is how a first-order heterotroph gets nitrogen into its body.
What is by eating an autotroph (or producer).
300
This is why all populations in a food web are considered interdependent.
What is because when one population is affected, all other populations are affected.
300
These are 2 ways the spread of a virus can be lessened.
What are hand-washing, quarantine, death of infected individuals, vaccinations.
400
This is what causes runoff, and where runoff goes.
What are excess precipitation and into water sources (streams, rivers, ponds, lakes, ocean).
400
These are energy sources, formed in the ground, that when combusted, release carbon back into the atmosphere.
What are fossil fuels.
400
These denitrify nitrogen so that it can return to the atmosphere as a gas.
What are denitrifying bacteria in the soil.
400
This is the level of an energy pyramid where the most energy is REQUIRED.
What is the top level.
400
These are 3 examples of chemical reactions.
What are burning, rotting, rusting, photosynthesis, cellular respiration.
500
This happens during cellular respiration in plant leaves and returns water vapor to the atmosphere.
What is transpiration.
500
These are 2 ways organisms return carbon to the ground.
What are decay and waste elimination.
500
These are 2 examples of legumes.
What are clover, soybeans, and any member of the pea family.
500
This is one way an energy pyramid is more informative than a food web.
What are they show population size, amount of energy transfer.
500
These are one way photosynthesis and cellular respiration are alike, and one way they are different.