Characteristics of Life
When all things change over time as a result of their environment changing.
Evolution
a substance which can not be broken down into simpler substances
element
a molecule that reacts with water
hydrophillic
number of individuals in a population relative to space
population density
pH of 4
acid
The maintenance of internal environment
Homeostasis
the smallest particle of an element that still has properties of that element
atom
when water molecules bond to each other
cohesion
immigration, emigration, birth, death are all factor that what?
influence population
pH or 14
base
All things must contain DNA
positive charge; in nucleus
proton
when water climbs up tubes against the force of gravity
capillary action
the maximum number of organisms an ecosystem can hold based on its available supplies
carrying capacity
pH of 7
neutral
asexual and sexual
Reproduction
no charge; in nucleus
neutron
a molecule that does not react with water
hydrophobic
a factor whose effects on the population vary based on population density
Density dependent factors
What's an example of an acid?
diet soda
autotrophs and heterotrophs
Obtain and use materials and energy
negative charge; cloud around the nucleus
electron
when cohesion causes the upper edge of a body of water to act as a solid and hold up objects that are more dense than water
surface tension
a factor that effects the population regardless of population density
Density independent factors
What's an example of a base?
bleach based cleaner