Check all the characteristics below that describe elements.
one type of atom
a pure substance
more than one type of atom
chemically combined elements
DONE

answer'(basidium)the spore--bearing structure of a basidiomycete is called a basidiocarp; ///

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

the growth of the plants is affected by the heat of the light. what is the student doing?

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.