In 1950 the pH of the pond water was 8.2, but by 2000 the pH had decreased to 5.2. Which of the following changes would also be expected in the pond over the same time period?
I. Increased levels of dissolved oxygen.
II. Increased levels of heavy metals.
III. Increased number of fish species.

a) I only
b) II only
c) III only
d) II and III
e) I, II, and III

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.

To calculate the molarity of a solution, you need to know the moles of solute and the