Acids have a pH less than v 7 and a
Select
concentration of hydrogen (H) ions
than bases do. Bases have a pH Select
V7
and have a Select
concentration of
hydrogen (H+) ions than acids do. Neutral substances
have a pH equal to 7.

(amoeba sisters video recap: pedigrees and need

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated