atoms of the same element with different masses due to different number of neutrons
What is an isotope
100
a "self-feeder", an organism that can make its own food
What is an autotroph / producer
100
the ability to survive and reproduce
What is fitness
100
the number of individuals an environment can support
What is carrying capacity
200
is made up of genetic diversity, species diversity and ecosystem diversity
What is biodiversity
200
the energy of movement
What is kinetic energy
200
the rate of photosynthesis, the rate at which carbon is fixed into organic molecules
What is primary production
200
a random change in the DNA
What is a mutation
200
population growth with unlimited resources
What is exponential growth / J-shaped curve
300
the amount of land required to support one person based on their lifestyle
What is an ecological footpring
300
a weak attraction between slight positive and negative charges such as between two water molecules
What is a hydrogen bond
300
a diagram of the different trophic levels representing the ecological efficiency where only 10% of energy is transferred from one level to the next higher level
What is a trophic pyramid
300
a population distribution where the spacing of individuals exhibit no particular pattern
What is a random distribution
300
the fertility rate required to maintain a stable population with no growth, 2.1 in developed countries
What is replacement level fertility
400
a testable statement, or prediction, that can be falsified
What is a hypothesis
400
a type of feedback loop that resists or lessens change
What is a negative feedback loop
400
the movement of matter (such as water and carbon) through the earth's four spheres
What are the biogeochemical cycles
400
a mechanism of evolution whereby the most adapted individuals survive and reproduce, resulting in a more adapted populationz
What is natural selection
400
dividing 70 by the growth rate (rule of 70) will give you this
What is the doubling time
500
a framework or set of guidelines which scientists follow to learn about the natural world
What is the scientific method
500
a group of molecules that contain carbon and hydrogen and include carbohydrates, nucleic acids, proteins and lipids
What is an organic molecule
500
a metabolic pathway that harness energy from organic molecules, requiring oxygen and releasing CO2
What is cellular respiration
500
a mechanism of evolution which causes random change in a population due to small population size
What is genetic drift
500
2 factors that affect human population growth (or total fertility rate)
What is age of marriage, level of education in women, affluence