15. Nadia wrote the following sentence in her report on Pluto: "Pluto is a dwarf planet because it has a spherical shape and an orbit around the Sun that is clear of other objects." Which of the following is a correction that needs to be
made?
A. Pluto is actually a small solar system body.
B. Pluto's orbit is not clear of other objects,
C. Pluto is actually a planet.
D. Pluto has a potato-like shape.

Idon’t understand this page, can someone ?

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?

How are the terms group and period used on the periodic table