Definition: All the individuals of a species that live together in one place at the same time Example: this of humans in the United States in 2005 is around 275,000,000
Term: po
Interdener

Approximately what portion of the foods that we eat have been genetically modified in some way? a. fewer than 10% b. about 50% c. nearly 100%

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

This rapid change in species that rarely leaves behind fossil evidence is referred to as