25% While standing in line, a student notices that some students are really tall, some are approximately her height, and others are very short. From her observations, what could be a logical inference for the variations in height? A The tall students are taking growth steroids. B The short students are not eating the proper foods. с The height of the students is inherited from their parents. D The height of the students cannot be determined from the observations. 9 > E

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

he would use the colour black