Which describes one effect of the sea-level change that occurred during the last ice age? a flooding that swept across the land due to regression
b buildup of salt in freshwater areas due to transgression
c extinction of organisms in shallow waters due to regression
d erosion of shorelines and other coastal areas due to transgression

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Define adaptation. why do organisms adapt? give an example.