Which of the following statement explains how fossils can be useful? All fossils can be burned to make energy.
Fossils such petrified wood are used to generate energy.
Fossils such as amber are used to generate energy.
Fossils such as coal are used to generate energy.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?