8th grade Science Unit 3 Life over time

Which term describes something that displays all the characteristics of life?

• homeostasis
• organism
• stimulus
• unicellular

Which characteristic of life is necessary so that organisms continue to exist?

• growth and development
• homeostasis
• responses to stimuli
• reproduction

Which word means, "remains of an organism found in layers of rock, ice, or amber"?

• fossil
• imprint
• legacy
• strata

All living things 

• breathe oxygen and need water.
• are made of cells and reproduce. 
• breathe oxygen and reproduce.
• breathe oxygen and are made of cells. 

Relative dating

• Uses the carbon dating method
• Gives an exact age in years
• Gives an aproximate age of an object by comparing it to other fossils
• Uses the Uranium-lead dating method

This image shows that 

• These animals have no simliarities in their structures. 
• two different species may have evolved from a common ancestor. 
• These animals are from the same species. 
• These animals likely evolved from different ancestors due to their differences. 

Plants get their food by: 

• By consuming preditors
• by breaking down dead organisms
• by consuming other organisms
• Using photosynthesis

A population is

• a group of organisms that can mat to produce fertil offspring
• a process in which better addapted individuals are more likely to survive and reproduce
• a group of orgainsims of the same spieces that live in a defined geographical area
• when organisms pass on traits that make them better suited to their invironment

Fossils help support the idea of evolution because: 

• They show the age of things
• They show the connection between organisms
• They show the regions things are found in
• They support pangea

Embryo evidence supports evolution because:

• Nearly all embryos are similar at some stage
• embryos only happen in related organisms
• embryos of plants are the same as in animals
• all embryos are the same size