Cells are the least complex level of organization, and cells come from
Least complex level of organization in humans
Xylem is a tissue in plants that
Main function of respiratory system
Vacuoles in a cell
structure means part, function means
Uses light energy to make food for a plant (chemical change)
Nutrients (food), waste and other materials are all transported through the body by the
All cells use energy and excrete waste. Mitochondria use oxygen and excrete CO2 during
Shivering warms the body. Sweat (perspiration)
Which results in offspring different from parent cells (not an identical clone)
Heredity is
Chromosomes are sometimes x-shaped, with stripes called genes that
Primary succession is ecological succession that begins in a place that ________________________.
Which of the following is an example of ecological succession?
What are two kinds of ecological succession?
How much energy is transferred up one trophic level of the energy pyramid.
Galapagos island finches and tortoises all developed traits through natural selection. What occurs during the process of natural selection?
Which of the following best describes the role of decomposers in an ecosystem?
Groundwater is
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