unit 1
What is a bar graph?
A representation that shows data with rectangles with equal with.
What is an unicellular organism.
What is a trait?
A characteristic of an organism
What is a fossil record?
Preserved remains or traces of an organism.
What are physical adaptations?
A physical change to make an organism more fit
What is a closed system?
A system that allows energy but no matter to enter or leave.
What is a cell wall?
A protective structure found outside the cell membrane.
What is an allele?
Any of several forms of the code for a gene.
What is mass extinction?
A rapid widespread decrease in the amount of life on earth.
What is a symbiotic relationship?
What is a system?
A group with related parts that work together and can be studied as a unit.
what is cytoplasm?
A fluid like material within cells.
What is protein?
A machine like molecule that can carry out specific functions of a cell.
What is artificial selection?
The process where humans breed organisms to selectively develop a trait.
What is a commensalism relationship?
A relationship where one animal benefits while the other one is not harmed.