Which observation about the rock best supports this classification? a. The rock is composed of several minerals.
b. The rock contains fragments of other rocks.
c. The rock has a vesicular texture.
d. The rock shows distorted and stretched pebbles.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

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?

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o