Radioactive decay gives off electromagnetic radiation and
a. rays.
b. particles.
c. waves.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

2. what two items do autotrophs take from the environment to produce their food? 3. what are the two items that are released during transpiration from leaves? 4. what are the two membranes of the system? a.what are the two stages of photosynthesis? what are the two parts of photosynthesis?

The atoms in a have a definite volume, but move quickly enough to overcome the forces of attraction between them. a. solid b.liquid c.gas