Marine plants, such as algae, use CO2 to make energy. Ocean fertilization is the introduction into oceans of nutrients that encourage the growth of these plants. How can this technique affect the
pH in oceans that already have higher than normal CO2 readings? PLATO Unit Activity: Earth’s Changing Climate

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the answer is option a.

answersilicon (si); oxygen (o);