chapter 1
Using one or more of your senses to gather information
observing
A. Characteristics of Living Things #1
1.All organisms are made up of cells.
a group of organisms that can produce offspring
species
1.There are variations within populations
2.Those variations can be favorable
3.More offspring are produced in each generation that can survive
4.Those offspring that survive and reproduce have the favorable variations
5.Over time, small changes accumulate and populations change
Natural selection
first need of living things
water
2 types of observations
1.Quantitative observations are ones that deal with numbers or an amount
2.Qualitative observations deal with descriptions that cannot be expressed in numbers
A. Characteristics of Living Things #2
Organisms can be unicellular
the preserved remains or traces of an organism that lived in the past.
fossils
Petrified fossils, or permineralization, are formed when minerals replace the remains, changing them to rock
Molds and casts are formed when hard structures dissolve in the sediment leaving a hollow space in which minerals form a cast
Organisms can also be preserved in ice or tree sap for example
fossil formation
second need of living things
food
Trying to explain or interpret things that have been observed
inferring
A. Characteristics of Living Things#3
All organisms contain similar chemicals
traits that helps an organism
survive and reproduce .
adaptations
3 domains
1.Bacteria
2.Archaea
3.Eukarya
third need of living things
living space
Making a forecast of what will happen in the future based upon past observations or experience
predicting
A. Characteristics of Living Things#4
4.All organisms use energy
- movement, autonomic functions, healing, etc.
the gradual change in a species over enormous spans of time.
evolution
Domain Eukarya
1.protists
2.plants
3.animals
4.fungi
fourth need of living things
Stable Internal Conditions
Scientists use as a way of learning about the natural world
science
A. Characteristics of Living Things#5
. Respond to Surroundings
evidence of evolution
Fossils
early development
body structures
-Form a Hypothesis
-Collect and Interpret Data
-Pose a Question
-Draw Conclusions
-Communicate Results
-Design the Experiment
scientific method
The maintenance of stable internal conditions is called
homeostasis